Levensmiddelenadditief: E330 (EU 1333/2008) | Codex: 330 quantum satis
Klasyfikacja CLP (H-statements): H315 (Skin corrosion/irritation), H319 (Serious eye damage/eye irritation), H335 (Specific target organ toxicity, single exposure) (PubChem GHS)
6,99 €
czysty kwas cytrynowy do zastosowań kulinarnych i domowych, waga netto 1000g
🔒 Demomodus — dit artikel is niet te koop.
Legale stof. dhscientific.com is een demonstratie van het MOL-GOD-platform — wij verkopen niets en er worden geen bestellingen verwerkt. Verboden stoffen worden hier automatisch geblokkeerd op basis van de regelgevingscanon (vergelijk bijv. heptachloor).
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP), Villa RE, Azimonti G, Bonos E, Christensen H, Durjava M, Dusemund B, Gehring R, Glandorf B, Kouba M, López-Alonso M, Ma
York G; Kelly AW; Robison L; Iuzzolino L; Lee AY. 2025. "Revisiting the solid-state landscape of creatine citric acid: A salt or a cocrystal?." Journal of pharmaceutical sciences. https://doi.org/10.1
Gegevensbronnen:
PubChem, NIST Chemistry WebBook, CRC Handbook of Chemistry and Physics (103rd ed.)
Laatst bijgewerkt: 2026-04-27
Regelgevingsstatus van de stof
Deze stof is onderworpen aan reglementaire vereisten: beheer van gevaarlijke afvalstoffen (BDO-register). Details in de sectie "Regelgevingsstatus (REACH/ECHA/CLP)" en op de SDS. Regelgevingsinformatie — beperkt de aankoop in deze winkel niet.
📚 De boekbibliografie moet nog worden gegenereerd. Gecureerde algemene leerboeken zijn hieronder beschikbaar; CAS-specifieke Google Books kunnen via het beheerpaneel worden opgehaald.
National Institute of Standards and Technology. 2024. "NIST Chemistry WebBook, SRD 69." Gaithersburg, MD: NIST. Accessed 2025-01-01. ↗
Spectral Database for Organic Structure Determination (SDBS). 2024. National Institute of Advanced Industrial Science and Technology (AIST), Japan. Accessed 2025-01-01. ↗
Ulrich, Eldon L., Hideo Akutsu, John F. Doreleijers, Yoko Harano, Yannis E. Ioannidis, Jundong Lin, Miron Livny, et al. 2008. "BioMagResBank." Nucleic Acids Research 36 (D1): D402–D408. [DOI ↗]
Horai, Hisayuki, Masanori Arita, Shigehiko Kanaya, Yoshito Nihei, Tasuku Ikeda, Kazuhiro Suwa, Yuya Ojima, et al. 2010. "MassBank: A Public Repository for Sharing Mass Spectral Data for Life Sciences." Journal of Mass Spectrometry 45 (7): 703–714. [DOI ↗]
Linstrom, P.J., and W.G. Mallard, eds. 2024. NIST Chemistry WebBook, NIST Standard Reference Database Number 69. Gaithersburg, MD: National Institute of Standards and Technology. ↗
McDonald, M. Shane, Mike McAvoy, and Ajit Bhalerao. 1988. "JCAMP-DX: A Standard Form for Exchange of Infrared Spectra in Computer Readable Form." Applied Spectroscopy 42 (1): 151–162. [DOI ↗]
PubChem. 2024. "PubChem Compound Database." National Library of Medicine, National Institutes of Health. Accessed 2025-01-01. ↗
📊Databases met spectroscopische spectra — inline-gegevens9 bronnenMolGod_SPECDB_2
Spectra worden op aanvraag opgehaald uit 9 bronnen. Elk spectrum wordt opgeslagen in onze database — de volgende keer openen = geen enkele aanvraag naar de externe API. Download JCAMP-DX / CSV / PNG bij elk spectrum zonder te zoeken.
Gegevens opgehaald via MolGod_Spectra_Remote_Fetcher (JCAMP-DX-parser) en opgeslagen in de tabel wp_molgod_spectra_cache. Geen dubbele downloads, geen herhaalde aanvragen naar NIST bij volgende openingen. Licenties worden nageleefd (alleen een deep-link plus onze eigen visualisatie wordt gepubliceerd).
Gegevens worden live opgehaald uit meerdere bronnen (priority-chain). JCAMP-DX / CSV / PNG beschikbaar om te downloaden onder elk spectrum. ⓘ Eén bron ★★☆☆☆ⓘ Eén bron ★★☆☆☆
IR — Fourier-transform infrarood
IR — Fourier-transform infrarood wordt geladen…
MS — massaspectrometrie (EI 70eV)
MS — massaspectrometrie (EI 70eV) wordt geladen…
🧮 Vergelijking DFT vs. experiment (IR)
Overlay van het experimentele IR-spectrum op het theoretisch berekende spectrum met de B3LYP/6-31G*-methode (schaalfactor 0.9614, Scott & Radom 1996).
Becke, Axel D. 1993. "Density-Functional Thermochemistry. III. The Role of Exact Exchange." Journal of Chemical Physics 98 (7): 5648–5652. Definitie van de B3LYP-functionaal.
Scott, Anthony P., and Leo Radom. 1996. "Harmonic Vibrational Frequencies: An Evaluation of Hartree–Fock, Møller–Plesset, Quadratic Configuration Interaction, Density Functional Theory, and Semiempirical Scale Factors." Journal of Physical Chemistry 100 (41): 16502–16513. Schaalfactoren voor DFT (bijv. 0.9614 voor B3LYP/6-31G*).
Merrick, Jeffrey P., Damian Moran, and Leo Radom. 2007. "An Evaluation of Harmonic Vibrational Frequency Scale Factors." Journal of Physical Chemistry A 111 (45): 11683–11700. Update van Scott & Radom — schaalfactoren voor nieuwere DFT-functionalen.
Lee, Chengteh, Weitao Yang, and Robert G. Parr. 1988. "Development of the Colle-Salvetti Correlation-Energy Formula into a Functional of the Electron Density." Physical Review B 37 (2): 785–789. De LYP-correlatie — aanvulling op Becke 1993 voor B3LYP.
Hehre, Warren J., Robert Ditchfield, and John A. Pople. 1972. "Self-Consistent Molecular Orbital Methods. XII. Further Extensions of Gaussian-Type Basis Sets." Journal of Chemical Physics 56 (5): 2257–2261. Definitie van de 6-31G*-basisset (split-valence + polarisatie).
Johnson, Russell D., III, ed. 2022. "NIST Computational Chemistry Comparison and Benchmark Database (CCCBDB)." NIST Standard Reference Database 101, Release 22. https://cccbdb.nist.gov. Benchmark voor theoretische waarden — de fallbacklink in de widget.
Cramer, Christopher J. 2004. "Essentials of Computational Chemistry: Theories and Models." 2nd ed. Chichester: Wiley. Een handboek over DFT-methoden en berekeningen van vibratiefrequenties.
Jensen, Frank. 2017. "Introduction to Computational Chemistry." 3rd ed. Chichester: Wiley. Modern computational chemistry — basissets + methoden voor vibratiespectra.
Foresman, James B., and Æleen Frisch. 2015. "Exploring Chemistry with Electronic Structure Methods." 3rd ed. Wallingford, CT: Gaussian, Inc. Een praktische Gaussian-gids — IR + Raman + NMR met DFT.
🎓 Gids voor spectruminterpretatie (voor studenten)
Wyjaśnienia każdego pasma w widmie — dlaczego pojawia się tam, gdzie się pojawia, i co świadczy o strukturze.
IR (infrarood) (27 pieken)
Het IR (infrarood)-spectrum bevat 27 geïdentificeerde banden. De onderstaande analyse legt uit wat elk daarvan structureel betekent en waarom deze in dat bepaalde bereik verschijnt.
O–H stretch (H-bonded, alcohol/acid)OH● high
Band "O–H stretch (H-bonded, alcohol/acid)" verschijnt in de gevallen: 3,297.0 cm⁻¹ (middel (m)), 3,488.0 cm⁻¹ (middel (m)). Duidt op de aanwezigheid van O–H-bindingen (alcohol/zuur/water). De brede band is het gevolg van waterstofbrugvorming in de vloeibare/vaste toestand.
C=O stretch (ketone, aldehyde)C=O● high
Band "C=O stretch (ketone, aldehyde)" verschijnt in de gevallen: 1,719.0 cm⁻¹ (sterk (s)). Een sterke carbonylband — de exacte positie geeft het groeptype aan: aldehyde ~1720, keton ~1715, ester ~1740, amide ~1660.
O–H stretch (broad, COOH dimer)COOH● medium
Band "O–H stretch (broad, COOH dimer)" verschijnt in de gevallen: 2,562.0 cm⁻¹ (zwak (w)), 2,635.0 cm⁻¹ (zwak (w)), 2,756.0 cm⁻¹ (zwak (w)). Een zeer brede O–H-band (~2500–3300) samen met C=O (~1710) is de klassieke signatuur van een carbonzuur (dimeer).
C–N stretch (amine), C–O stretch (alcohol/ether)CN/CO● medium
Band "C–N stretch (amine), C–O stretch (alcohol/ether)" verschijnt in de gevallen: 1,197.0 cm⁻¹ (middel (m)), 1,216.0 cm⁻¹ (middel (m)), 1,235.0 cm⁻¹ (middel (m)). De functionele groep wordt geïdentificeerd op basis van het karakteristieke bereik (Pavia/Silverstein) — het precieze fysische mechanisme hangt af van de dichtstbijzijnde chemische buren.
C–O stretch (alcohol primary, ester)CO● medium
Band "C–O stretch (alcohol primary, ester)" verschijnt in de gevallen: 1,057.0 cm⁻¹ (zwak (w)), 1,089.0 cm⁻¹ (zwak (w)). De functionele groep wordt geïdentificeerd op basis van het karakteristieke bereik (Pavia/Silverstein) — het precieze fysische mechanisme hangt af van de dichtstbijzijnde chemische buren.
C–H bend (CH3 symmetric — gem-dimethyl)gem-CH3● medium
Band "C–H bend (CH3 symmetric — gem-dimethyl)" verschijnt in de gevallen: 1,391.0 cm⁻¹ (middel (m)). De functionele groep wordt geïdentificeerd op basis van het karakteristieke bereik (Pavia/Silverstein) — het precieze fysische mechanisme hangt af van de dichtstbijzijnde chemische buren.
📚 Bibliografie (Chicago)
Field, Leslie D., Sev Sternhell, and John R. Kalman. 2013. "Organic Structures from Spectra." 5th ed. Chichester: Wiley. Een oefenboek met opgaven voor studenten (begeleider bij de interpretatiegids).
Williams, Dudley H., and Ian Fleming. 2008. "Spectroscopic Methods in Organic Chemistry." 6th ed. London: McGraw-Hill. Een klassieker van narratieve spectrale interpretatie — legt uit "waarom de piek hier ligt".
Crews, Phillip, Jaime Rodríguez, and Marcel Jaspars. 2009. "Organic Structure Analysis." 2nd ed. New York: Oxford University Press. Een workflow voor multiparametrische structurele interpretatie.
McLafferty, Fred W., and František Tureček. 1993. "Interpretation of Mass Spectra." 4th ed. Mill Valley, CA: University Science Books. MS-fragmentatiemechanismen — McLafferty-herschikking, m/z 29 = CHO.
Reusch, William. 2013. "Virtual Textbook of Organic Chemistry: Spectroscopy." East Lansing, MI: Michigan State University. https://www2.chemistry.msu.edu/faculty/reusch/VirtTxtJml/Spectrpy/spectro.htm. Een open didactische gids voor IR/NMR/MS/UV — ideaal om functionele groepen uit te leggen.
Hesse, Manfred, Herbert Meier, and Bernd Zeeh. 2007. "Spektroskopische Methoden in der organischen Chemie." 8th ed. Stuttgart: Thieme. Het Duitse standaardhandboek over spectrale interpretatie.
Lampman, Gary M., Donald L. Pavia, George S. Kriz, and James R. Vyvyan. 2010. "Spectroscopy." 4th ed. Belmont, CA: Cengage Learning. Een werkboek met geïntegreerde interpretatieve toelichtingen.
Kalsi, P. S. 2010. "Spectroscopy of Organic Compounds." 6th ed. New Delhi: New Age International. Een volledig handboek over de interpretatie van IR/NMR/MS/UV-spectra.
🔎 Zoeken op spectrum (JCAMP-DX)
Upload een JCAMP-DX-bestand (.jdx, .dx, .jcm) — het systeem berekent de cosinusgelijkenis met alle spectra in de database en toont de TOP 10 matches.
📚 Bibliografie (Chicago)
McLafferty, Fred W., ed. 2018. Wiley Registry of Mass Spectral Data. 11th ed. Hoboken, NJ: Wiley. Een referentie-MS-bibliotheek (~775k spectra).
Stein, Stephen E., and Donald R. Scott. 1994. "Optimization and Testing of Mass Spectral Library Search Algorithms for Compound Identification." Journal of the American Society for Mass Spectrometry 5 (9): 859–866. Het cosine- + dot-product-algoritme van NIST MS Search.
McDonald, Robert S., and Paul A. Wilks Jr. 1988. "JCAMP-DX: A Standard Form for Exchange of Infrared Spectra in Computer Readable Form." Applied Spectroscopy 42 (1): 151–162. De JCAMP-DX-specificatie (uitgebreid tot 5.01 voor NMR/MS).
McLafferty, Fred W., and František Tureček. 1993. "Interpretation of Mass Spectra." 4th ed. Mill Valley, CA: University Science Books. Cosinusgelijkenis-matching en MS-fragmentatie — het fundament van het zoekalgoritme.
Sumner, Lloyd W., Alexander Amberg, Dave Barrett, Michael H. Beale, Richard Beger, Clare A. Daykin, Teresa W.-M. Fan, et al. 2007. "Proposed Minimum Reporting Standards for Chemical Analysis." Metabolomics 3 (3): 211–221. MSI Level 1-4 — standaarden voor het betrouwbaarheidsniveau van spectrale matching.
Stein, Stephen E. 1999. "An Integrated Method for Spectrum Extraction and Compound Identification from Gas Chromatography/Mass Spectrometry Data." Journal of the American Society for Mass Spectrometry 10 (8): 770–781. Het AMDIS-algoritme — deconvolutie + library match (NIST).
Lindon, John C., George E. Tranter, and David W. Koppenaal, eds. 2017. "Encyclopedia of Spectroscopy and Spectrometry." 3rd ed. Amsterdam: Academic Press. Encyclopedische lemma's over spectral library searching.
Smith, Brian C. 2011. "Fundamentals of Fourier Transform Infrared Spectroscopy." 2nd ed. Boca Raton, FL: CRC Press. FT-IR en het JCAMP-DX-formaat voor transmissiespectra.
Larkin, Peter. 2017. "Infrared and Raman Spectroscopy: Principles and Spectral Interpretation." 2nd ed. Amsterdam: Elsevier. Principes van IR/Raman-library-matching en pieken-preprocessing.
Haynes, William M., ed. 2024. CRC Handbook of Chemistry and Physics. 105th ed. Boca Raton: CRC Press/Taylor & Francis. ISBN 978-1-032-55554-4. ↗
National Institute of Standards and Technology. 2024. "NIST Chemistry WebBook, SRD 69." Gaithersburg, MD: NIST. Accessed 2025-01-01. ↗
Yaws, Carl L. 2014. The Yaws Handbook of Physical Properties for Hydrocarbons and Chemicals. 2nd ed. Oxford: Gulf Professional Publishing.
PubChem. 2024. "PubChem Compound Database." National Library of Medicine, National Institutes of Health. Accessed 2025-01-01. ↗
Marrero, J., and R. Gani. 2001. "Group-Contribution Based Estimation of Pure Component Properties." Fluid Phase Equilibria 183–184: 183–208. ↗
Joback, K. G., and R. C. Reid. 1987. "Estimation of Pure-Component Properties from Group-Contributions." Chemical Engineering Communications 57 (1–6): 233–243. ↗
Sangster, J. 1997. Octanol-Water Partition Coefficients: Fundamentals and Physical Chemistry. Chichester: Wiley. ISBN 978-0-471-97397-3.
Mannhold, Raimund, and Han van de Waterbeemd. 2001. "Substructure and Whole Molecule Approaches for Calculating Log P." Journal of Computer-Aided Molecular Design 15 (4): 337–354. ↗
Perrin, Ditlev D., Boyd Dempsey, and E. P. Serjeant. 1981. pKa Prediction for Organic Acids and Bases. London: Chapman and Hall. ISBN 0-412-21090-5.
Constantinou, Leonidas, and Rafiqul Gani. 1994. "New Group Contribution Method for Estimating Properties of Pure Compounds." AIChE Journal 40 (10): 1697–1710. ↗
Ertl, Peter, Bernhard Rohde, and Paul Selzer. 2000. "Fast Calculation of Molecular Polar Surface Area as a Sum of Fragment-Based Contributions and Its Application to the Prediction of Drug Transport Properties." Journal of Medicinal Chemistry 43 (20): 3714–3717. ↗
🔄 Omrekenaar voor concentratie-eenheden LIVEMolGod_UNITCONV_1
Voer de concentratie Citric Acid in een willekeurige eenheid in — de rest wordt automatisch berekend.
Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
g/L ↔ molarity
c (mol/L) = (g/L) / MW
±0.1% (depends on MW precision)
Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
mmol/L ↔ molarity
c (mol/L) = mmol/L × 10⁻³
Exact
Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
Celsius ↔ Kelvin
T(K) = t(°C) + 273.15
±0.01 K (ITS-90 scale)
BIPM (Bureau International des Poids et Mesures) (2019)
Celsius ↔ Fahrenheit
T(°F) = T(°C) × 9/5 + 32
±0.1 °F
Thompson A, Taylor BN (2008)
density-corrected % ↔ molarity
c (mol/L) = (%w/w × ρ × 10) / MW, ρ in g/mL
±0.1% when ρ known to 3 decimals
Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
📚 Bibliografie (8 gezaghebbende bronnen)
Thompson A, Taylor BN (2008). Guide for the Use of the International System of Units (SI). NIST Special Publication 811 · DOI: 10.6028/NIST.SP.811-2008 → Primary SI standard for US scientific usage
Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007). Quantities, Units and Symbols in Physical Chemistry — The IUPAC Green Book. RSC Publishing, 3rd ed. · DOI: 10.1039/9781847557889 · ISBN: 978-0-85404-433-7 → Canonical IUPAC guide for chemistry quantities/units
BIPM (Bureau International des Poids et Mesures) (2019). The International System of Units (SI), 9th edition. BIPM · ↗ → International SI definitions (incl. redefined kilogram 2019)
ISO/IEC (2022). Quantities and units — Part 1: General. International Organization for Standardization — ISO 80000-1:2022 · ↗ → General rules for physical quantities and units
ISO/IEC (2019). Quantities and units — Part 9: Physical chemistry and molecular physics. International Organization for Standardization — ISO 80000-9:2019 · ↗ → Concentration / molality / amount-of-substance conventions
Tiesinga E, Mohr PJ, Newell DB, Taylor BN (2021). CODATA recommended values of the fundamental physical constants: 2018. Rev. Mod. Phys. 93(2):025010 · DOI: 10.1103/RevModPhys.93.025010 → Avogadro, gas constant, molar volume (2019 SI revision)
IUPAC (2019). Compendium of Chemical Terminology — the IUPAC Gold Book (online). IUPAC · DOI: 10.1351/goldbook → Definitions of mass fraction, molality, normality, ppm, activity
Mills IM, Cvitaš T, Homann K, Kallay N, Kuchitsu K (1988). Quantities, Units and Symbols in Physical Chemistry. Blackwell Scientific Publications, 1st ed. · ISBN: 0-632-01773-5 → Historical predecessor of IUPAC Green Book
🧪 Wizard voor het bereiden van oplossingen WIZARDMolGod_PREP_1
Rumble, John R., ed. 2023. CRC Handbook of Chemistry and Physics. 104th ed. Boca Raton, FL: CRC Press. [link ↗]
International Association for the Properties of Water and Steam (IAPWS). 1997. "Release on the Static Dielectric Constant of Ordinary Water Substance." IAPWS R8-97. [link ↗]
Reichardt, Christian, and Thomas Welton. 2011. Solvents and Solvent Effects in Organic Chemistry. 4th ed. Weinheim: Wiley-VCH. https://doi.org/10.1002/9783527632220. [link ↗]
Hansen, Charles M. 2007. Hansen Solubility Parameters: A User's Handbook. 2nd ed. Boca Raton, FL: CRC Press. https://doi.org/10.1201/9781420006834. [link ↗]
IFA. n.d. "Water." GESTIS Substance Database. Institut für Arbeitsschutz der Deutschen Gesetzlichen Unfallversicherung. Accessed April 25, 2026. [link ↗]
Rumble, John R., ed. 2023. CRC Handbook of Chemistry and Physics. 104th ed. Boca Raton, FL: CRC Press. [link ↗]
Reichardt, Christian, and Thomas Welton. 2011. Solvents and Solvent Effects in Organic Chemistry. 4th ed. Weinheim: Wiley-VCH. https://doi.org/10.1002/9783527632220. [link ↗]
Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. Introduction to Modern Liquid Chromatography. 3rd ed. Hoboken, NJ: Wiley. https://doi.org/10.1002/9780470508183. [link ↗]
Smallwood, Ian M. 1996. Handbook of Organic Solvent Properties. London: Arnold. https://doi.org/10.1016/B978-0-340-64578-9.X5000-9. [link ↗]
Reichardt, Christian, and Thomas Welton. 2011. Solvents and Solvent Effects in Organic Chemistry. 4th ed. Weinheim: Wiley-VCH. https://doi.org/10.1002/9783527632220. [link ↗]
Hansen, Charles M. 2007. Hansen Solubility Parameters: A User's Handbook. 2nd ed. Boca Raton, FL: CRC Press. [link ↗]
Rumble, John R., ed. 2023. CRC Handbook of Chemistry and Physics. 104th ed. Boca Raton, FL: CRC Press. [link ↗]
Smallwood, Ian M. 1996. Handbook of Organic Solvent Properties. London: Arnold. [link ↗]
National Institute of Standards and Technology. n.d. "Methane, dichloro- (CAS 75-09-2)." NIST Chemistry WebBook, SRD 69. Accessed April 25, 2026. [link ↗]
Hansen, Charles M. 2007. Hansen Solubility Parameters: A User's Handbook. 2nd ed. Boca Raton, FL: CRC Press. [link ↗]
International Agency for Research on Cancer. 1999. "Dichloromethane." IARC Monographs on the Evaluation of Carcinogenic Risks to Humans 71: 251–315. [link ↗]
Reichardt, Christian, and Thomas Welton. 2011. Solvents and Solvent Effects in Organic Chemistry. 4th ed. Weinheim: Wiley-VCH. [link ↗]
Armarego, Wilfred L. F., and Christina Li Lin Chai. 2009. Purification of Laboratory Chemicals. 6th ed. Oxford: Butterworth-Heinemann. https://doi.org/10.1016/B978-1-85617-567-8.50003-3. [link ↗]
Hansen, Charles M. 2007. Hansen Solubility Parameters: A User's Handbook. 2nd ed. Boca Raton, FL: CRC Press. [link ↗]
National Institute of Standards and Technology. n.d. "Furan, tetrahydro- (CAS 109-99-9)." NIST Chemistry WebBook. Accessed April 25, 2026. [link ↗]
Smallwood, Ian M. 1996. Handbook of Organic Solvent Properties. London: Arnold. [link ↗]
National Institute of Standards and Technology. n.d. "Hexane (CAS 110-54-3)." NIST Chemistry WebBook. Accessed April 25, 2026. [link ↗]
Hansen, Charles M. 2007. Hansen Solubility Parameters: A User's Handbook. 2nd ed. Boca Raton, FL: CRC Press. [link ↗]
Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. Introduction to Modern Liquid Chromatography. 3rd ed. Hoboken, NJ: Wiley. [link ↗]
Agency for Toxic Substances and Disease Registry. 1999. Toxicological Profile for n-Hexane. Atlanta, GA: U.S. Department of Health and Human Services. [link ↗]
International Agency for Research on Cancer. 1999. "Chloroform." IARC Monographs on the Evaluation of Carcinogenic Risks to Humans 73: 131–182. [link ↗]
National Institute of Standards and Technology. n.d. "Methane, trichloro- (CAS 67-66-3)." NIST Chemistry WebBook. Accessed April 25, 2026. [link ↗]
Hansen, Charles M. 2007. Hansen Solubility Parameters: A User's Handbook. 2nd ed. Boca Raton, FL: CRC Press. [link ↗]
Reichardt, Christian, and Thomas Welton. 2011. Solvents and Solvent Effects in Organic Chemistry. 4th ed. Weinheim: Wiley-VCH. [link ↗]
Oplosbaarheidstheorie (toegepast bij de voorspelling van compatibiliteit):
Yalkowsky, Samuel H., and Shri C. Valvani. 1980. "Solubility and Partitioning I: Solubility of Nonelectrolytes in Water." Journal of Pharmaceutical Sciences 69 (8): 912–922. https://doi.org/10.1002/jps.2600690814 — General Solubility Equation (GSE): logS = 0.5 − logP − 0.01(MP−25).
Hansen, Charles M. 2007. Hansen Solubility Parameters: A User's Handbook. 2nd ed. Boca Raton, FL: CRC Press. https://doi.org/10.1201/9781420006834 — HSP-triplet (dD, dP, dH) + Ra-formule.
Reichardt, Christian, and Thomas Welton. 2011. Solvents and Solvent Effects in Organic Chemistry. 4th ed. Weinheim: Wiley-VCH. https://doi.org/10.1002/9783527632220 — E_T(30) polarity scale, solwatochromia.
Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. Introduction to Modern Liquid Chromatography. 3rd ed. Hoboken, NJ: Wiley. https://doi.org/10.1002/9780470508183 — Eluotropic series, polarity index.
PubChem Compound Database — CAS 77-92-9 lookup ↗ — logP (XLogP3), water solubility experimental + predicted.
Volledige bibliografie in het accordeon REFERENTIES (onderaan de pagina) — Chicago Manual of Style 17th ed., Author-Date.
🛡️ Veiligheid — CAS 77-92-9MolGod_SAFEHUB_MAIN
Mededeling over gegevensbeperkingen. De veiligheidsinformatie op deze pagina is uitsluitend ter informatie en vervangt geen volledig veiligheidsinformatieblad (SDS). Raadpleeg vóór gebruik van het product het actuele veiligheidsinformatieblad van de fabrikant en de GHS/CLP-richtlijnen. De CLP-indeling geldt voor de zuivere bulkstof, niet voor commerciële formuleringen.
GHS/CLP-indeling — Verordening (EG) nr. 1272/2008 + UN GHS Rev. 9 (2021).
⚠ Waarschuwing (Warning)
❗GHS07Irriterend / schadelijk
🚨 Gevarenaanduidingen (H)
H335 — Kan irritatie van de luchtwegen veroorzaken.
H319 — Veroorzaakt ernstige oogirritatie.
🛡 Voorzorgsmaatregelen (P)
P261 — Inademing van stof/rook/gas/nevel/dampen/spuitnevel vermijden.
P264 — Na het werken met dit product … grondig wassen.
✓ Geharmoniseerde indeling overeenkomstig bijlage VI bij de CLP-verordening (EG) 1272/2008 (officiële, bindende indeling). Indexnummer: 607-750-00-3.
Referentie (Chicago): European Chemicals Agency. "citric acid, Index No. 607-750-00-3." In Table 3 of Annex VI to Regulation (EC) No 1272/2008 (CLP Regulation), 23rd Adaptation to Technical Progress. Helsinki: European Chemicals Agency, 2026. https://echa.europa.eu/information-on-chemicals/annex-vi-to-clp.
Vertalingen: CLP-verordening (EG) 1272/2008, Bijlage III en IV. Gegevens: PubChem/NLM.
☢️ Toxicologische gegevens (IARC + EPA CTX)
📖 Toxicologische samenvatting
Kwas cytrynowy (kwas 2-hydroksypropano-1,2,3-trikarboksylowy, CAS 77-92-9) jest naturalnie występującym kwasem organicznym o skrajnie niskiej toksyczności. LD50 doustnie u szczura wynosi 11 700 mg/kg masy ciała wg NIOSH NPG [1], potwierdzone przez dossier ECHA REACH [2]; cross-referencja [1,2]; substancja klasy 5 Hodge'a i Sternera ("praktycznie nieszkodliwa"). IARC nie zaklasyfikowała kwasu cytrynowego [3]; brak CMR w Aneksie VI CLP [2]. Kwas cytrynowy posiada status GRAS w USA (FDA 21 CFR 184.1033) i jest dopuszczony jako regulator kwasowości E330 w UE (Rozporządzenie WE 1333/2008); JECFA ustaliło ADI = "not specified" (NS) [4]. EFSA (przegląd 2018): kwas cytrynowy jako dodatek do żywności (E330) nie budzi obaw bezpieczeństwa przy obecnym użyciu — NOAEL > 2 000 mg/kg/dobę wg badań subchronicznych na gryzoniach; margines narażenia > 100 [5]. Jedyne klinicznie istotne działanie: lokalne drażnienie błon śluzowych przy wysokich stężeniach roztworów (> 30%) i erozja szkliwa zębów przy chronicznym kontakcie z napojami kwasowymi [6].
🔖 Broncitaten (6) — Chicago Notes-Bibliography
U.S. National Institute for Occupational Safety and Health (NIOSH). 2007. NIOSH Pocket Guide to Chemical Hazards: Citric Acid (CAS 77-92-9). DHHS (NIOSH) Pub. No. 2007-151. Rev. 2018. Atlanta: CDC/NIOSH. https://www.cdc.gov/niosh/npg/. [LD50 oral rat = 11 700 mg/kg.]
International Agency for Research on Cancer (IARC). 2025. "List of Classifications." Lyon: IARC/WHO. https://monographs.iarc.who.int/list-of-classifications/. [CAS 77-92-9 nie sklasyfikowany.]
Joint FAO/WHO Expert Committee on Food Additives (JECFA). 2001. "Citric Acid." In WHO Food Additives Series No. 46. Geneva: WHO/FAO. [ADI = "not specified"; GRAS.]
EFSA Panel on Food Additives and Flavourings (FAF). 2020. "Re-evaluation of Citric Acid (E 330) as a Food Additive." EFSA Journal 18(6):6147. DOI: 10.2903/j.efsa.2020.6147. [Peer-reviewed; open-access; NOAEL > 2 000 mg/kg/dobę; ADI NS potwierdzony.]
Lussi, Adrian, and Elmar Hellwig. 2006. "Risk Assessment and Causal Preventive Treatment of Dental Erosion." Caries Research 40(2):171–175. DOI: 10.1159/000091069. [Peer-reviewed; erozja szkliwa przy chronicznym kontakcie z kwasami.]
Formaat: Chicago Notes-Bibliography (genummerd). [n,m] = kruisverwijzing: beide bronnen bevestigen onafhankelijk dezelfde waarde. DOI-links = collegiaal getoetste wetenschappelijke studies. RESTRICTED = toegang via een wetenschappelijke bibliotheek.
Geen individuele IARC-vermelding voor deze CAS
Geen aparte IARC-monografie in de gecontroleerde lijsten — dit is GEEN bevestiging van het ontbreken van carcinogeniteit. Controleer de CLP/GHS-classificatie (sectie CMR / GHS).
🌍 Ecotoxicology & environmental fate (SDS sec. 8/12)
LC₅₀ (fish, 96 h):
440 mg/L (Leuciscus idus ssp. melanotus, 48 h)
EC₅₀ (Daphnia):
1535 mg/L (Daphnia magna, 24 h)
Source: ECHA REACH dossier / EU RAR — the same verified values as the Safety Data Sheet (SDS), sec. 8/12.
🔬 Grenswaarden voor beroepsmatige blootstelling (PubChem × NIOSH/OSHA)
ℹ️ GHS-meldingen van leveranciers (zelfclassificatie — niet-bindend)
De onderstaande codes zijn aanvullende zelfclassificaties van leveranciers (zelfclassificatie, ECHA C&L-/PubChem-meldingen) — een aanvulling op de hierboven vermelde bindende geharmoniseerde classificatie van bijlage VI; ze kunnen overtollig zijn.
Hoogst gemelde waarschuwingssignaal: Warning
(volgens opgaven van kennisgevers, niet bindend)
De nummering [n] komt overeen met de superscript-voetnoten in de bovenstaande tekst. [n,m] = kruisverwijzing: beide bronnen bevestigen onafhankelijk van elkaar dezelfde waarde.
U.S. National Institute for Occupational Safety and Health (NIOSH). 2007. NIOSH Pocket Guide to Chemical Hazards: Citric Acid (CAS 77-92-9). DHHS (NIOSH) Pub. No. 2007-151. Rev. 2018. Atlanta: CDC/NIOSH. https://www.cdc.gov/niosh/npg/. [LD50 oral rat = 11 700 mg/kg.] 🔗
International Agency for Research on Cancer (IARC). 2025. "List of Classifications." Lyon: IARC/WHO. https://monographs.iarc.who.int/list-of-classifications/. [CAS 77-92-9 nie sklasyfikowany.] 🔗
Joint FAO/WHO Expert Committee on Food Additives (JECFA). 2001. "Citric Acid." In WHO Food Additives Series No. 46. Geneva: WHO/FAO. [ADI = "not specified"; GRAS.]
EFSA Panel on Food Additives and Flavourings (FAF). 2020. "Re-evaluation of Citric Acid (E 330) as a Food Additive." EFSA Journal 18(6):6147. DOI: 10.2903/j.efsa.2020.6147. [Peer-reviewed; open-access; NOAEL > 2 000 mg/kg/dobę; ADI NS potwierdzony.] [DOI]
Lussi, Adrian, and Elmar Hellwig. 2006. "Risk Assessment and Causal Preventive Treatment of Dental Erosion." Caries Research 40(2):171–175. DOI: 10.1159/000091069. [Peer-reviewed; erozja szkliwa przy chronicznym kontakcie z kwasami.] [DOI]
📖 Algemene toxicologische literatuur (module)
Chen Y; Jin J; Xu X; Zhang H; Zhu L. 2026. "Effect of oil-soluble emulsifiers on the self-assembly behaviors of citric acid esters in bulk and emulsified systems." Food research international (Ottawa, Ont.). https://doi.org/10.1016/j.foodres.2025.117896. [DOI]
Atmaca YB; Kehr NS. 2026. "Synthesis of citric acid-coated nanomaterials releasing oxygen and antioxidant vitamin E and investigation of their effects on healthy and cancer cells under hypoxic and normoxic conditions." Biomedical materials (Bristol, England). https://doi.org/10.1088/1748-605X/ae5e12. [DOI]
Hategekimana F; Elçin AE; Elçin YM. 2026. "Green synthesis of caffeine-catalyzed citric acid-PPG/PEG crosslinked alginate hydrogel scaffolds for prospective biomedical applications." International journal of biological macromolecules. https://doi.org/10.1016/j.ijbiomac.2026.151850. [DOI]
Ma CM; Liu WR; Xu Y; Zhang G; Xu XY; Wang B. 2026. "Preparation, characterization and toxicological evaluation of tapioca starch/chitosan/anhydrous citric acid composite edible films and their application in cooked rice." International journal of biological macromolecules. https://doi.org/10.1016/j.ijbiomac.2026.151712. [DOI]
Hirano S; Oshima T; Inada A; Tsuruda T. 2026. "Dissolving Amyloid Fibrils with Natural Deep Eutectic Solvents: Citric Acid-Glycerol Achieves Superior Solubilization and Partial Protein Refolding." ACS applied bio materials. https://doi.org/10.1021/acsabm.5c02553. [DOI]
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP), Villa RE, Azimonti G, Bonos E, Christensen H, Durjava M, Dusemund B, Gehring R, Glandorf B, Kouba M, López-Alonso M, Marcon F, Nebbia C, Pechová A, Prieto-Maradona M, Theodoridou K, Yurkov A, Dulak-Lis M, Galobart J, Vettori MV, Villa AN, Pettenati E, Valeri P.. 2026. "Safety and efficacy of the feed additives consisting of citric acid anhydrous and citric acid monohydrate produced by fermentation with <i>Aspergillus niger</i>CGMCC 6.466 for all animal species (Sunshine Biotech International)." . https://doi.org/10.2903/j.efsa.2026.10031. [DOI]
York G; Kelly AW; Robison L; Iuzzolino L; Lee AY. 2025. "Revisiting the solid-state landscape of creatine citric acid: A salt or a cocrystal?." Journal of pharmaceutical sciences. https://doi.org/10.1016/j.xphs.2025.01.023. [DOI]
Ugarte-Pereyra C; Argyri SM; Bordes R; Vincent-Bonnieu S; Beaucé J; Binks BP. 2025. "Design of oleofoams from citric acid esters of mono-/diglycerides." Food research international (Ottawa, Ont.). https://doi.org/10.1016/j.foodres.2025.117119. [DOI]
International Agency for Research on Cancer (IARC). 2024. "IARC Monographs on the Identification of Carcinogenic Hazards to Humans." Lyon: IARC. 🔗
U.S. EPA. 2024. "ECOTOX Knowledgebase." Washington, DC: U.S. Environmental Protection Agency. 🔗
ECHA. 2024. "Chemical Safety Assessment." European Chemicals Agency. 🔗
U.S. National Toxicology Program. 2024. Report on Carcinogens. 15th ed. Research Triangle Park, NC: National Institute of Environmental Health Sciences. 🔗
GESTIS. 2024. "GESTIS Substance Database." Institute for Occupational Safety and Health of the German Social Accident Insurance (DGUV). 🔗
U.S. EPA. 2024. "CompTox Chemicals Dashboard." Washington, DC: U.S. Environmental Protection Agency. 🔗
ECHA. 2023. "Regulation (EC) No 1272/2008 on Classification, Labelling and Packaging of Substances and Mixtures (CLP), Annex VI — Harmonised Classification." European Chemicals Agency. 🔗
🆘 Eerste hulp — noodproceduresCAS 77-92-9
Waarschuwing
Gevarenklasse: Irriterend
⚠️ BELANGRIJK:
Bij een ernstig incident — bel 112 of het Antigifcentrum: +48 42 631 47 24 (Łódź).
🩹
Huidcontact
✅ Wat te doen
Spłucz wodą
Mydło + woda jeśli długi kontakt
Krem nawilżający (kwas wysycha skórę)
wp_molgod_spill_procedures (legacy)
👁️
Oogcontact
✅ Wat te doen
Płucz 15 min wodą
Lekarz okulista jeśli podrażnienie utrzymuje się
wp_molgod_spill_procedures (legacy)
🫁
Inademing / luchtwegen
✅ Wat te doen
Świeże powietrze (pył drażniący błony śluzowe)
Wypłucz nos/gardło wodą
wp_molgod_spill_procedures (legacy)
🩺
Inslikken / spijsverteringskanaal
✅ Wat te doen
Wypłucz usta wodą
Małe ilości (<10g) — bez konsekwencji (jest w cytrynach!)
Goldfrank, Lewis R., Robert S. Hoffman, Mary Ann Howland, Neal A. Lewin, Lewis S. Nelson, and Silas W. Smith. 2019. Goldfrank's Toxicologic Emergencies. McGraw-Hill Education.
Olson, Kent R., Ilene B. Anderson, Neal L. Benowitz, Paul D. Blanc, Richard F. Clark, Thomas E. Kearney, Susan Y. Kim-Katz, and Alan H. B. Wu. 2018. Poisoning & Drug Overdose. McGraw-Hill.
World Health Organization (WHO). 2007. Antidotes for Poisoning by Cyanide (IPCS Evaluation Series 21). International Programme on Chemical Safety, WHO Press. ↗
Howland, Mary Ann, and Robert S. Aaron. 2002. Goldfrank's Antidotes for Pediatric Emergency Care. Lippincott Williams & Wilkins.
Centrum Zatruć Łódź. 2024. Procedury kliniczne w zatruciach ostrych — wytyczne dla ratowników. Centrum Informacji Toksykologicznej. ↗
National Institute for Occupational Safety and Health (NIOSH). 2007. Recommendations for First Aid Procedures for Chemical Exposures (NIOSH Pocket Guide to Chemical Hazards, DHHS Publication No. 2005-149). U.S. Department of Health and Human Services. ↗
United Nations Economic Commission for Europe (UNECE). 2021. Globally Harmonized System of Classification and Labelling of Chemicals (GHS), Revision 9. United Nations. ↗
Brent, Jeffrey. 2009. Fomepizole for the Treatment of Pediatric Ethylene and Diethylene Glycol, Butoxyethanol, and Methanol Poisonings. Clinical Toxicology 48(5): 401–406.
European Society for Paediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN). 2018. Caustic Ingestion in Children — Position Paper. Journal of Pediatric Gastroenterology and Nutrition 66(5): 838–845.
Agency for Toxic Substances and Disease Registry (ATSDR). 2024. Toxicological Profiles — Medical Management Guidelines. U.S. Department of Health and Human Services. ↗
IPCS INCHEM. 2024. International Programme on Chemical Safety — Poisons Information Monographs. WHO/UNEP/ILO. ↗
American National Standards Institute (ANSI). 2014. ANSI Z358.1-2014 — Emergency Eyewash and Shower Equipment. International Safety Equipment Association.
🚨 Noodprocedure — morsen van chemicaliënIrriterend
CAS 77-92-9GHS:H319
🥽 PPE — Persoonlijke beschermingsmiddelen
Handschoenen:standaard nitrilhandschoenen
Veiligheidsbril:Ja
Overall:laboratoriumjas
📦 Kleine morsing (<1L) — absorptiemiddel: dry sweeping then water rinse
1. Zbierz na sucho miotłą/szufelką
2. Pozostałości zwilż wodą + wytrzyj
3. Zneutralizuj (jeśli >100g) sodą oczyszczoną — reaguje z fizz CO2
4. Wytrzyj do sucha
🛢️ Grote morsing (>1L)
1. Zbierz mechanicznie do papierowych worków
2. Można utylizować jako odpad nieuciążliwy (organiczny biodegradowalny)
3. Roztwory >10% — neutralizuj NaHCO3, kontroluj pH 6-8
🩹 Eerste hulp
🧴 Huid
1. Spłucz wodą
2. Mydło + woda jeśli długi kontakt
3. Krem nawilżający (kwas wysycha skórę)
👁️ Ogen
1. Płucz 15 min wodą
2. Lekarz okulista jeśli podrażnienie utrzymuje się
U.S. Occupational Safety and Health Administration. 2024. 29 CFR 1910.120 — Hazardous Waste Operations and Emergency Response (HAZWOPER). U.S. Code of Federal Regulations.
[link ↗]
National Fire Protection Association. 2018. NFPA 472: Standard for Competence of Responders to Hazardous Materials/Weapons of Mass Destruction Incidents. NFPA.
[link ↗]
European Parliament and Council. 2012. Directive 2012/18/EU on the Control of Major-Accident Hazards Involving Dangerous Substances (Seveso III). Official Journal of the European Union L 197: 1–37.
[link ↗]
U.S. National Institute for Occupational Safety and Health. 2024. NIOSH Pocket Guide to Chemical Hazards. Centers for Disease Control and Prevention.
[link ↗]
European Chemicals Agency. 2020. Guidance on the Compilation of Safety Data Sheets (SDS), Version 3.1. ECHA.
[link ↗]
Bronnen: ECHA · FDA GRAS · GESTIS.
Laatst geverifieerd: 2026-04-27 09:00:00.
Indicatieve gegevens — volg in een noodsituatie altijd de instructies van de leverancier + de lokale arbo- en veiligheidsvoorschriften.
European Committee for Standardization (CEN). 2016. EN 374-1:2016 — Protective gloves against dangerous chemicals and micro-organisms — Part 1: Terminology and performance requirements for chemical risks. CEN, Brussels. EN 374-1:2016. [link ↗] — Classificatie van chemisch bestendige handschoenen type A/B/C; JKLPT-permeatietests
European Committee for Standardization (CEN). 2001. EN 166:2001 — Personal eye-protection — Specifications. CEN, Brussels. EN 166:2001. [link ↗] — Markeringen: B = middelhoge stootenergie, T = extreme temperaturen, 9 = gesmolten metalen en hete vaste stoffen
European Committee for Standardization (CEN). 2009. EN 14605:2005+A1:2009 — Protective clothing against liquid chemicals — Performance requirements for clothing with liquid-tight (Type 3) or spray-tight (Type 4) connections. CEN, Brussels. EN 14605:2009. [link ↗] — Type 3 (jet-tight) en Type 4 (spray-tight) bescherming tegen vloeibare chemicaliën
National Institute for Occupational Safety and Health (NIOSH). 2017. Recommendations for Chemical Protective Clothing: A Companion to the NIOSH Pocket Guide. U.S. Department of Health & Human Services / CDC. [link ↗] — Praktische gids voor de keuze van CPC (chemische beschermkleding) per stof en blootstellingsscenario
Occupational Safety and Health Administration (OSHA). 2011. Personal Protective Equipment — General requirements. U.S. Department of Labor — 29 CFR 1910.132. 29 CFR 1910.132. [link ↗] — De werkgever moet PBM + training + een schriftelijk gedocumenteerde risicobeoordeling verstrekken
🗄️ Opslagcompatibiliteitsmatrix (6×6)
Giftig
Visuele compatibiliteitskaart van opslagklassen — controleer voordat u containers naast elkaar plaatst. Beweeg de cursor over een cel om de uitleg en de bronregel te zien (NFPA / OSHA / Bretherick / ECHA).
National Fire Protection Association (NFPA). 2024. NFPA 30: Flammable and Combustible Liquids Code. NFPA, Quincy, MA. NFPA 30 (2024 ed.). [link ↗] — §9.4–9.7 — class-based storage segregation rules (the canonical US lab/industrial reference)
Occupational Safety and Health Administration (OSHA). 2023. 29 CFR 1910.106 — Flammable Liquids. U.S. Department of Labor, Federal Register. 29 CFR 1910.106. [link ↗] — (d)(5)(i)–(iv) — flammable storage cabinet, inside-storage room, and segregation requirements
European Chemicals Agency (ECHA). 2024. Annex VI to Regulation (EC) No 1272/2008 (CLP) — Harmonised Classification and Labelling. ECHA, Helsinki / Official Journal of the European Union. CLP Annex VI. [link ↗] — §2.4–2.5 — EU-level classification driving storage compatibility under REACH/CLP
♻️ Verwijdering van chemisch afval (BDO)Irriterend⚠️ BDO vereist
📋 Volledige BDO-lijst:bdo.mos.gov.pl ↗
— officieel register van het Ministerie van Klimaat en Milieu. Afvaloverdrachtskaart (KPO):BDO-sjabloon
verplicht voor elke levering van gevaarlijk afval.
European Commission. 2014. Commission Decision 2014/955/EU on the list of waste pursuant to Directive 2008/98/EC. Official Journal of the European Union. Decyzja 2014/955/UE. [link ↗] — European List of Waste (LoW) — 6-cijferige EWC-codes + asterisk voor gevaarlijk
Ministerstwo Klimatu i Środowiska Rzeczypospolitej Polskiej. 2020. Rozporządzenie Ministra Klimatu z dnia 2 stycznia 2020 r. w sprawie katalogu odpadów. Dziennik Ustaw RP 2020 poz. 10. [link ↗] — Poolse afvalcatalogus — uitvoering van Besluit 2014/955/EU
Główny Inspektorat Ochrony Środowiska (GIOŚ). 2024. Baza Danych O Odpadach (BDO) — System rejestracji firm utylizacyjnych. Ministerstwo Klimatu i Środowiska. [link ↗] — Centraal BDO-register — volledige lijst van bedrijven met vergunning voor afvalbeheer
Polska — Sejm RP. 2012. Ustawa z dnia 14 grudnia 2012 r. o odpadach. Dz.U. 2013 poz. 21 (z późn. zm.). [link ↗] — Nationale wet — definieert de verplichtingen van de afvalproducent + BDO-registratie
Furr, A. Keith, ed.. 2000. CRC Handbook of Laboratory Safety. CRC Press. — Classificatie van laboratoriumafval + scheidingsprocedures (hoofdstuk Waste Management); EN 374:2013 handschoennormen voor personen die gevaarlijk afval hanteren.
Pohanish, Richard P.. 2017. Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens. Elsevier. — Afvalclassificatie per CAS + onverenigbaarheden — invoer voor de EWC-mapping.
Lewis, Richard J.. 2012. Sax's Dangerous Properties of Industrial Materials. Wiley. — Reactiviteit + opslagcompatibiliteit van afval (oxidatoren vs brandbare stoffen — gescheiden stromen).
NIOSH. 2024. Pocket Guide to Chemical Hazards. U.S. Department of Health and Human Services. [link ↗] — PEL/REL/IDLH per CAS — basis voor de vereiste PBM bij afvaltransport (KPO).
OSHA. 2024. Occupational Chemical Database — Hazardous Waste Operations (HAZWOPER). Occupational Safety and Health Administration. [link ↗] — 29 CFR 1910.120 — trainingen + PBM voor de omgang met gevaarlijk afval.
European Parliament and Council. 2008. Directive 2008/98/EC on waste (Waste Framework Directive). Official Journal of the European Union L 312/3. [link ↗] — Afvalbeheerhiërarchie (preventie → nuttige toepassing → verwijdering); definieert "gevaarlijk afval".
European Parliament and Council. 2009. Regulation (EC) No 1272/2008 (CLP) on classification, labelling and packaging of substances and mixtures. Official Journal of the European Union L 353. [link ↗] — CLP-classificatie van H-zinnen → mapping naar EWC * (asterisk = gevaarlijk).
United Nations Economic Commission for Europe (UNECE). 2023. European Agreement concerning the International Carriage of Dangerous Goods by Road (ADR 2025). UNECE. [link ↗] — ADR — eisen voor het transport van gevaarlijk afval (KPO + UN-nummer + klassen 1–9).
IPCS INCHEM. 2024. International Programme on Chemical Safety — Waste Management Guidelines. WHO/UNEP/ILO. [link ↗] — Internationale richtlijnen voor neutralisatie + verwijdering per CAS.
European Parliament and Council. 2006. Regulation (EC) No 1013/2006 on Shipments of Waste. Official Journal of the European Union L 190: 1–98. [link ↗] — Grensoverschrijdende overbrenging van gevaarlijk afval — kennisgevings- + toestemmingseisen vóór export
ℹ️ Checklist van regelgevende verplichtingen voor CAS 77-92-9.
Status gebaseerd op: ADR 2023 (Tabel A), REACH Bijlage XVII, CLP Bijlage VI (geharmoniseerde indeling), hazard class uit m14-spill DB, SVHC, GIS en MAC PL. Principe: geen gegevens = geen bewering (wij verklaren NIET 'geen beperkingen' zonder basis).
Hoe te voldoen: VOLDAAN — veiligheidsinformatieblad v38 (PL) beschikbaar om te downloaden op deze pagina.Vereiste: actueel SDS conform Verord. 1907/2006 (REACH) bijlage II, formaat met 16 rubrieken.
Rechtsgrondslag: Rozporządzenie (WE) 1907/2006 (REACH) Art. 31 + Aneks II
Hoe te voldoen: Het etiket moet bevatten: GHS-pictogrammen, het signaalwoord (Gevaar/Waarschuwing), gevarenaanduidingen (H) en voorzorgsmaatregelen (P), gegevens van de fabrikant. Verplicht sinds 2010 (stoffen) en 2015 (mengsels). Voor deze stof geldt een GEHARMONISEERDE INDELING (CLP bijlage VI) — zie hieronder; deze heeft voorrang op zelfindeling.
Hoe te voldoen: Laboratoriumpersoneel: initiële opleiding (algemene introductie + functiegebonden) + herhalingsopleiding elke 5 jaar (of elke 3 jaar voor ingenieurs-/technische functies). Documentatie bewaard in het personeelsdossier.
Hoe te voldoen: BDO-registratie is verplicht voor producenten van gevaarlijk afval. Voor elke levering is een afvaloverdrachtskaart (KPO) vereist. Jaarverslag uiterlijk 15 maart van het volgende jaar.
Rechtsgrondslag: Ustawa z 14 grudnia 2012 r. o odpadach (Dz.U. 2013 poz. 21)
Hoe te voldoen: Geen ADR-gegevens in de MOL-GOD-dataset voor dit CAS-nummer. Ga er NIET van uit dat er geen beperkingen zijn — verifieer vóór verzending de vervoersindeling in ADR 2023 (Tabel A) en in rubriek 14 van het veiligheidsinformatieblad (SDS).
Rechtsgrondslag: Umowa europejska ADR 2025 + Ustawa z 19 sierpnia 2011 r. o przewozie towarów niebezpiecznych
Hoe te voldoen: Importeurs/fabrikanten van ≥1 ton/jaar moeten de stof bij ECHA registreren (technisch dossier + Chemical Safety Report bij ≥10 t). Raadpleeg de ECHA Annex VI / registered substances list.
⚪REACH Bijlage XVII (beperkingen voor gebruik/marketing)niet van toepassing
Hoe te voldoen: Zweryfikowano wobec klasyfikacji zharmonizowanej (CLP Załącznik VI): substancja NIE ma klasyfikacji CMR kat. 1A/1B, więc NIE podlega ogólnemu zakazowi sprzedaży ogółowi społeczeństwa z poz. 28–30 Załącznika XVII. UWAGA: szczegółowe (nie-CMR) pozycje Załącznika XVII nie są objęte zbiorem MOL-GOD (zbiór niepełny) — przy wątpliwości sprawdź skonsolidowany Załącznik XVII na stronach ECHA.
Rechtsgrondslag: Rozporządzenie (WE) 1907/2006 (REACH) Załącznik XVII — ograniczenia produkcji/obrotu/stosowania
❓MAC — Maximale Aanvaardbare Concentratie in de werkomgevingte verifiëren
Hoe te voldoen: Geen MAC-gegevens in de MOL-GOD-verzameling (onvolledige verzameling — ~41 van ~600 stoffen op de lijst). Afwezigheid betekent GEEN afwezigheid van MAC — raadpleeg de volledige lijst Pb. 2024 pos. 1017 (Regeling MRiPS van 4 september 2024), en bij afwezigheid pas OEL uit EU-richtlijnen of aanbevolen door NIOSH/ACGIH toe.
Rechtsgrondslag: Rozp. MRiPS z 4 września 2024 r. (Dz.U. 2024 poz. 1017) — NDS i NDSCh
⚪GIS-register (precursoren / psychotropica)niet van toepassing
Hoe te voldoen: Niet opgenomen in de beschikbare werkverzameling van precursoren (onvolledige lijst). Afwezigheid is GEEN bevestiging — verifieer aan de hand van bijlage I van Verordening (EG) 273/2004 en de GIS-lijst vóór het in de handel brengen.
Rechtsgrondslag: Rozp. (WE) 273/2004 + Ustawa o przeciwdziałaniu narkomanii (Dz.U. 2005 nr 179 poz. 1485)
Hoe te voldoen: VOLDAAN — informatieblad in het Pools (v38) beschikbaar op deze pagina.Vereiste: SDS in het Pools voor handel in PL (Art. 31 REACH + Chemische Stoffenwet Art. 17).
Rechtsgrondslag: Ustawa z 25 lutego 2011 r. o substancjach chemicznych i ich mieszaninach (Dz.U. 2011 nr 63 poz. 322)
European Parliament and Council. 2008. Regulation (EC) No 1272/2008 on classification, labelling and packaging of substances and mixtures (CLP). Official Journal of the European Union L 353/1. CLP Regulation 1272/2008. [link ↗] — Indeling, etikettering en verpakking van stoffen + mengsels (GHS-implementatie in de EU)
European Parliament and Council. 2006. Regulation (EC) No 1907/2006 concerning the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH). Official Journal of the European Union L 396/1. REACH Regulation 1907/2006. [link ↗] — REACH — registratie, beoordeling en autorisatie van chemische stoffen; SVHC; SDS bijlage II
Ministerstwo Rodziny i Polityki Społecznej Rzeczypospolitej Polskiej. 2024. Rozporządzenie Ministra Rodziny i Polityki Społecznej z dnia 4 września 2024 r. w sprawie najwyższych dopuszczalnych stężeń i natężeń czynników szkodliwych dla zdrowia w środowisku pracy. Dziennik Ustaw RP 2024 poz. 1017. [link ↗] — MAC en MACpiek voor ~600 chemische stoffen — actuele Poolse beroepsblootstellingslimieten
United Nations Economic Commission for Europe (UNECE). 2023. European Agreement concerning the International Carriage of Dangerous Goods by Road (ADR), 2025 Edition. United Nations, Geneva. ADR 2025. [link ↗] — Internationale overeenkomst inzake het wegvervoer van gevaarlijke goederen — UN-nummers, klassen, verpakkingen
📚 Geconsolideerde wetenschappelijke referenties — Chicago Author-Date 10 bronnen
Referenties verzameld uit alle tabbladen van de Safety Hub. CAS: 77-92-9 ·
PubChem ↗
Parlament Europejski i Rada UE. 2008. "Rozporządzenie (WE) nr 1272/2008 w sprawie klasyfikacji, oznakowania i pakowania substancji (CLP)." Dz.Urz. UE L 353. [↗]
GHS, Regelgeving
United Nations Economic Commission for Europe (UNECE). 2021. "Globally Harmonized System of Classification and Labelling of Chemicals (GHS), Ninth Revised Edition." United Nations, Geneva. [↗]
GHS
Goldfrank, Lewis R., Robert S. Hoffman, Mary Ann Howland, et al.. 2019. "Goldfrank's Toxicologic Emergencies, 11th ed.." McGraw-Hill Education, New York. ISBN 978-1-25-985961-8.
Pierwsza pomoc, Toksykologia
National Institute for Occupational Safety and Health (NIOSH). 2023. "NIOSH Pocket Guide to Chemical Hazards (DHHS Publ. 2005-149)." U.S. Department of Health and Human Services / CDC, Cincinnati, OH. [↗]
Pierwsza pomoc, PPE, Toksykologia
European Committee for Standardization (CEN). 2016. "EN 374-1:2016 — Protective gloves against dangerous chemicals and micro-organisms." CEN, Brussels. [↗]
PPE
UNECE. 2023. "European Agreement Concerning the International Carriage of Dangerous Goods by Road (ADR 2025)." United Nations, Geneva. [↗]
Utylizacja, Regulacje
National Fire Protection Association (NFPA). 2022. "NFPA 400 — Hazardous Materials Code." NFPA, Quincy, MA. [↗]
Magazynowanie
Urben, P.G. (ed.). 2017. "Bretherick's Handbook of Reactive Chemical Hazards, 8th ed.." Butterworth-Heinemann / Elsevier, Oxford. [↗]
Magazynowanie
Ministerstwo Klimatu i Środowiska RP. 2023. "Baza danych o produktach i opakowaniach oraz o gospodarce odpadami (BDO)." Ministerstwo Klimatu i Środowiska, Warszawa. [↗]
Utylizacja
International Agency for Research on Cancer (IARC / WHO). 2024. "IARC Monographs on the Identification of Carcinogenic Hazards to Humans — List of Classifications." WHO, Lyon. [↗]
Toksykologia
Tabbladen met eigen referenties (Emergency, PPE, Storage, Waste) bevatten aanvullende bibliografische vermeldingen binnen hun respectieve secties.
Plak een reeks herhaalde metingen (CSV of één getal per regel). De calculator berekent het gemiddelde, de standaardafwijking en 95% CI, en detecteert uitschieters (Grubbs + Dixon Q).
Scheidingsteken: komma, spatie, tab, nieuwe regel. Minimaal 3 metingen.
📐 Statistische formules
x̄ = Σxᵢ / n — rekenkundig gemiddelde
s² = Σ(xᵢ - x̄)² / (n-1) — steekproefvariantie
s = √s² — standaardafwijking
RSD% = (s / x̄) × 100% — relatieve standaardafwijking
ℹ️ Single-CAS Integrity: De volgende oplosmiddelen zijn analytische hulpmiddelen (HPLC mobiele fase) — NIET de geanalyseerde stof. De waarden die in andere accordeons worden getoond (MW, GHS, toxicologie) hebben betrekking op het huidige molecuul, niet op deze oplosmiddelen. Uitzondering: Single-CAS Integrity (categorie "oplosmiddelen/buffers/analytische methoden").
ℹ️ Single-CAS Integrity: De volgende oplosmiddelen zijn analytische hulpmiddelen (HPLC mobiele fase) — NIET de geanalyseerde stof. De waarden die in andere accordeons worden getoond (MW, GHS, toxicologie) hebben betrekking op het huidige molecuul, niet op deze oplosmiddelen. Uitzondering: Single-CAS Integrity (categorie "oplosmiddelen/buffers/analytische methoden").
ℹ️ Single-CAS Integrity: De volgende oplosmiddelen zijn analytische hulpmiddelen (HPLC mobiele fase) — NIET de geanalyseerde stof. De waarden die in andere accordeons worden getoond (MW, GHS, toxicologie) hebben betrekking op het huidige molecuul, niet op deze oplosmiddelen. Uitzondering: Single-CAS Integrity (categorie "oplosmiddelen/buffers/analytische methoden").
Fase
Oplosmiddel / CAS
Status
Actie
A
Woda + 10mM bufor wodorowęglanu amonu CAS 7732-18-5
Putative Identification of 47 Compounds from Jieyu Anshen Granule and Proposal of Pharmacopeia Quality‐Assessment Strategy Using TCM‐Specific Library with UHPLC‐Q‐Exactive‐Orbitrap‐MS
Fase: mobile phase however consisted of mobile phase A (water, 0
Detectie: MS/MS
Debiet: 0.40 mL/min
Temp.: 40.0 °C
Gradient: elution procedure could be described as the following: 0
Li X, Zeng J, Cai R, Li C, Chen X, Chen B, et al. Putative Identification of 47 Compounds from Jieyu Anshen Granule and Proposal of Pharmacopeia Quality‐Assessment Strategy Using TCM‐Specific Library with UHPLC‐Q‐Exactive‐Orbitrap‐MS. ChemistryOpen. 2024;14:e202400046. doi:10.1002/open.202400046
Abstract
Jieyu Anshen Granule is a traditional Chinese medicine prescription used for depression and primarily comprises five herbal medicines: Zhizi, Chaihu, Zhigancao, Danggui, and Yuanzhi. This study established a traditional Chinese herbal medicine‐specific library using emerging ultra‐high‐performance liquid chromatography‐quadrupole‐orbitrap‐tandem mass spectrometry analysis. Through library comparison, the study has fulfilled isomers distinction. As a result, 47 compounds were simultaneously and putatively identified from Jieyu Anshen Granule, including 12 unexpected compounds and 35 expected compounds. The unexpected compounds comprised cyclocommunol, 5‐hydroxyflavone, tangeretin, 3,5,6,7,8,3’,4’‐heptemethoxyflavone, calycosin‐7‐O‐β‐D‐glucoside, 7,4’‐dihydroxyflavone, naringenin‐7‐O‐β‐D‐glucoside, matrine, betaine, jervine, alantolactone, and hypericin. Among the 35 expected compounds, saikosaponin A, saikosaponin D, glycyrrhizic acid, geniposide, ligustilide, and polygalaxanthone III were further investigated using a quantum chemistry approach. Based on these, an effective quality assessment strategy is proposed for the Pharmacopeia, involving the simultaneous analysis of glycyrrhizic acid, geniposide, ligustilide, polygalaxanthone III, saikosaponins A and D through ultra‐high‐performance liquid chromatography‐quadrupole‐orbitrap‐tandem mass spectrometry analysis. This strategy enables the detection of adulteration in relation to Zhizi, Chaihu, Zhigancao, Danggui, and Yuanzhi in Jieyu Anshen Granule. The findings of unexpected compounds will deepen the understanding of chemistry in Jieyu Anshen Granule.
Global metabolic profile and multiple phytometabolites in the different varieties of Gastrodia elata Blume
HPLCFrontiers in Plant Science202390% ✓CC-BYResearch method (specificity, robustness)
Kolom: C18, 1.9 μm
Fase: Mobile phase A and B were 0
Detectie: UV 220 nm
Debiet: 0.35 mL/min
Temp.: 80.0 °C
Inj.: 800 μL
Gradient: , 95% A (0 min–2 min), 95%–5% A (2 min–22…
Zeng X, Li J, Chen T, Li Y, Guo S. Global metabolic profile and multiple phytometabolites in the different varieties of Gastrodia elata Blume. Frontiers in Plant Science. 2023;14:1249456. doi:10.3389/fpls.2023.1249456
Gastrodia elata Blume (Tianma in Chinese), a myco-heterotrophic orchid, is widely distributed in China. Tubers derived from this orchid are traditionally used as both medicinal and edible materials. At present, five primary varieties of G. elata are recorded in the “Flora of China.” Among them, the three main varieties currently in artificial cultivation are G. elata f. elata (GR, red stem), G. elata f. glauca (GB, black stem), and G. elata f. viridis (GG, green stem). In our study, the metabolic profiles and chemical composition of these three varieties were determined via UPLC-MS/MS and HPLC-UV. In total, 11,132 metabolites were detected, from which multiple phytometabolites were identified as aromatic compounds, heteroatomic compounds, furans, carbohydrates, organic acids, and their derivatives. A number of differentially expressed metabolites (DEMs) were annotated as bioactive ingredients. Overall, parishins, vanilloloside, and gastrodin A/B in the GB group were markedly higher, whereas gastrodin, gastrol, and syringic acid were more enriched in the GG or GR groups. Moreover, HPLC fingerprint analysis also found six metabolites used as markers for the identification of Gastrodiae Rhizoma in the Chinese Pharmacopoeia, which were also typical DEMs in metabolomics. Of these, gastrodin, 4-hydroxybenzyl alcohol, citric acid, and adenosine were quantitatively detected, showing a similar result with the metabolomic data. In summary, our findings provide novel insights into the phytochemical ingredients of different G. elata varieties, highlighting diverse biological activities and healthcare value.
Fase: mobile phases in several isocratic modes with 5% concentration steps of the…
Detectie: UV 340 nm
Debiet: 0.40 mL/min
Temp.: 40.0 °C
Inj.: 5 μL
Gradient: grade, PanReac, Spain), and methanol (analytical grade, Kriokhrom, St
Zenkevich I, Derouiche A, Nikitina D. Evidence for the Hydration of Some Organic Compounds during Reverse-Phase HPLC Analysis. Molecules. 2023;28:734. doi:10.3390/molecules28020734
Some polar analytes (X) can reversibly form hydrates in water-containing eluents under the conditions of reversed-phase HPLC analysis, X + H2O ⇄ X × H2O. One of the methods to detect their formation is the recurrent approximation of the net retention times of such analytes, tR(C + ΔC) = atR(C) + b, where ΔC = const is the constant step in the variation of the organic modifier content of an eluent. These dependencies are linear if hydrates are not formed, but in the case of hydrate formation, they deviate from linearity under high water content. It has been shown that UV spectroscopic parameters, namely, relative optical densities: Arel = A(λ1)/A(λ2), depend on eluent composition for some organic compounds, but their variations cannot be used as indicators for hydrate formation. The coefficients that characterize the dependence of the analyte retention indices on the organic component concentration of an eluent, dRI/dC, appeared to be the most informative additional criterion for hydration. The values of these coefficients for most polar analytes are largely negative (dRI/dC < 0), whereas, for nonpolar compounds, they are largely positive (dRI/dC > 0).
reverse-phase HPLChydration of analytesrecurrent approximation of retention timesretention indicesdependence of indices on the concentration of an organic modifier in an eluent
📈 Methodevalidatie (ICH Q2)
Geen validatiegegevens. Neem contact op met de auteur van de methode.
📊 Validatie van de HPLC-methode (ICH Q2(R1))PARTIAL
3 metrics need experimental data
Parameter
Waarde
Eenheid
ICH Q2-criterium
Status
Lineariteit (R²)
geen gegevens
unitless
R² ≥ 0.999 (≥0.99 voor bioanalytische methoden)
—
LOD (S/N = 3:1)
geen gegevens
ng/mL
S/N ≥ 3:1 (laagste detecteerbare concentratie)
—
LOQ (S/N = 10:1)
geen gegevens
ng/mL
S/N ≥ 10:1 (LOQ ≥ 3×LOD doorgaans)
—
Precisie (RSD intraday, n=6)
geen gegevens
% RSD
RSD ≤ 2% (intraday) / ≤ 3% (interday) voor de API
—
Juistheid (recovery, 3 niveaus)
geen gegevens
% (target 100±2%)
Recovery 98-102% (target 100%)
—
Lineariteitsbereik
geen gegevens
bijv. 0.1-100 ng/mL
Min. 80-120% van de nominale concentratie
—
Selectiviteit/Specificiteit
geen gegevens
qualitative
Geen interferentie — analytpiek volledig gescheiden (Rs ≥ 2.0)
—
Robuustheid (robustness)
geen gegevens
RSD < 2% bij ±5% variatie
RSD < 2% bij kleine parametervariaties
—
Legend:✓ PASS⚠ CAUTION✗ FAIL— NO_DATA
📚 Wetenschappelijke referenties (Chicago Author-Date) — klik om uit te klappen
Standaarden voor validatie van analytische methoden — 4 onafhankelijke bronnen (ICH + USP + AOAC + Snyder).
International Conference on Harmonisation (ICH). 2005. Validation of Analytical Procedures: Text and Methodology Q2(R1). ICH Expert Working Group. [link ↗] — Gold-standard ICH guideline — accepted by EMA, FDA, MHLW, NMPA
United States Pharmacopeia (USP) Convention. 2024. USP General Chapter <621> Chromatography. USP-NF 2024 ed. USP. [link ↗]
AOAC International. 2016. Appendix F: Guidelines for Standard Method Performance Requirements. AOAC INTERNATIONAL. [link ↗] — AOAC SMPR — alternative to ICH Q2 for food/dietary supplements
Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. Introduction to Modern Liquid Chromatography. 3rd ed. John Wiley & Sons. ISBN 978-0-470-16754-0. https://doi.org/10.1002/9780470508183 [link ↗] — Industry standard textbook — Chapter 11 covers method validation
Snyder, L. R., J. J. Kirkland, and J. L. Glajch. 1997. Practical HPLC Method Development. 2nd ed. Wiley. ISBN 978-0-471-00703-6. — Classic method-development reference (DryLab heritage).
Rozet, Eric, et al.. 2013. Analysis of recent pharmaceutical regulatory documents on analytical method validation. https://doi.org/10.1016/j.chroma.2007.03.111 [link ↗] — Comparison of FDA / EMA / ICH validation expectations — used for ICH Q2(R1) interpretation.
Heyden, Yvan Vander, et al.. 2009. Robustness of pharmaceutical liquid chromatographic methods. https://doi.org/10.1016/j.jchromb.2008.10.052 [link ↗] — Plackett-Burman design for robustness — basis of ICH Q2 §3.7.
Dong, Michael W.. 2019. HPLC and UHPLC for Practicing Scientists. 2nd ed. Wiley. ISBN 978-1-119-31378-3. https://doi.org/10.1002/9781119313793 [link ↗] — Modern (UHPLC) update of validation chapter — practical RSD/LOD examples.
Meyer, Veronika R.. 2010. Practical High-Performance Liquid Chromatography. 5th ed. Wiley. ISBN 978-0-470-68218-0. — European pharmacopeial perspective — complements USP/AOAC.
Kazakevich, Yuri V., and Rosario LoBrutto, eds.. 2007. HPLC for Pharmaceutical Scientists. Wiley-Interscience. ISBN 978-0-471-68162-4. https://doi.org/10.1002/9780470087954 [link ↗] — Pharma-focused validation case studies (specificity, robustness).
European Medicines Agency (EMA). 2011. Guideline on bioanalytical method validation EMEA/CHMP/EWP/192217/2009. EMA Committee for Medicinal Products for Human Use. [link ↗] — EMA bioanalytical companion to ICH Q2(R1) for clinical samples.
Diagnostiek van de 12 meest voorkomende HPLC-problemen met een beslissingsboom (5 stappen per probleem). Bron: Snyder/Kirkland/Dolan 3rd ed. Chapter 17 + LCGC LC Troubleshooting columns 1989-2024.
Verbrede pieken (broad peaks) medium
Symptoom: Alle pieken op het chromatogram zijn breder dan verwacht (FWHM > 2× normaal)
🔍 Diagnostische boom:
1. Controleer of alle pieken verbreed zijn of slechts sommige → JA: Alle → instrumenteel probleem (kolom of systeem) → NEE: Slechts sommige → chemisch probleem (interactie met de kolom voor specifieke analyten)
2. Verwissel met een testkolom — verdwijnt het probleem? → JA: KOLOM versleten — packing beschadigd, void in de eerste mm. Vervang hem. → NEE: Probleem in het LC-systeem
3. Controleer het dode volume (dead volume) — injectielus, verbindingen, detector → JA: Lus > 100 µL voor een 4.6 mm kolom of losse verbindingen → vervang de ferrules, kort de leidingen in → NEE: Diagnostiek voortzetten
4. Temperatuurtest: verhoog de kolom van 25°C naar 40°C → JA: Smallere pieken → massatransferkinetiek te traag (verhoog T) → NEE: Continue
5. Controleer het debiet t.o.v. het van Deemter-optimum voor deze kolom → JA: Optimum voor 4.6mm/5µm = 1.0 mL/min, voor 2.1mm/3µm = 0.4 mL/min → NEE: Continue
⚠️ Typische oorzaken:
Kolom versleten (>2000 injecties zonder voorkolom)
Dood volume van het systeem > 100 µL (verkeerde lus, lange leidingen, losse ferrules)
Temperatuur te laag (massatransferkinetiek)
Debiet buiten het van Deemter-optimum
Monsteroplosmiddel sterker dan mobiele fase A
✓ Oplossingen:
✓ Vervang de kolom (bij >2000 injecties)
✓ Controleer alle verbindingen — houd de leidingen zo kort mogelijk
✓ Verhoog de kolomtemperatuur naar 40°C (als de stof stabiel is)
✓ Verlaag het debiet naar het van Deemter-optimum
✓ Los het monster op in mobiele fase A (niet in puur organisch)
Piektailing (tailing, T > 1.5) high
Symptoom: Pieken hebben een verlengde "staart" aan de late-elutiezijde (asymmetrie T = b/a > 1.5 volgens USP)
🔍 Diagnostische boom:
1. Bevat de stof basische groepen (amino, pyridine)? → JA: Ja → silanolinteracties! Voeg 0.1% TFA of 5-10 mM TEA toe aan mobiele fase A. → NEE: Continue
2. Controleer de pH van de mobiele fase t.o.v. de pKa van de stof → JA: pH = pKa ± 1 → gedeeltelijke ionisatie, peak split. Verplaats de pH ≥ 2 eenheden weg van de pKa. → NEE: Continue
3. Controleer de leeftijd van de kolom (>1500 injecties?) → JA: Ja → blootgelegde silanolen (column bleed). Vervang door een kolom met hogere endcapping (XTerra, Symmetry). → NEE: Continue
4. Bevat het monster metalen (Fe, Cu uit glazen flesjes)? → JA: Ja → gebruik kleurloze type II-flesjes of PFA. Voeg 0.1mM EDTA toe aan het monster. → NEE: Continue
⚠️ Typische oorzaken:
Silanolinteracties (basische analyt + vrije silanolen van silicagel)
pH op de grens van de pKa van de analyt (peak split)
Oude kolom (column bleed, hoge silanolactiviteit)
Metalen in het monster (chelatie → tailing)
Kolomoverbelasting (>50 µg op een 4.6mm kolom)
✓ Oplossingen:
✓ Voeg 0.1% TFA (UV) of 0.1% mierenzuur (LC-MS) toe aan mobiele fase A
✓ Kies een kolom met hoogzuivere endcapping: Waters XBridge BEH, Phenomenex Kinetex
✓ Werk bij een pH ≥ 2 eenheden weg van de pKa
✓ 0.1mM EDTA aan het monster (Fe/Cu-chelatie)
✓ Verlaag het injectievolume naar ≤ 20 µL voor een 4.6mm kolom
Basislijndrift (baseline drift) medium
Symptoom: De basislijn stijgt of daalt systematisch gedurende >5 minuten
🔍 Diagnostische boom:
1. Gebruik je een gradiënt (B% neemt toe)? → JA: Ja → verschillende absorptie van fasen A vs B bij dλ. Oplosmiddelwisseling in de UV-cutoff. Controleer de UV-absorptie van het % organisch. → NEE: Verder (isocratisch)
2. Controleer de kolomtemperatuur — is deze stabiel tot ±0.5°C? → JA: Ja (stabiel) → verder → NEE: Instabiel → schakel de kolomthermostaat in (>25°C gecontroleerd)
3. Test: schakel de autosampler uit, laat alleen pomp+kolom+detector draaien → JA: De drift verdwijnt → contaminatie van de autosampler (reinig de naald, het septum) → NEE: Continue
4. Controleer de leeftijd van de lamp (D2 voor UV) → JA: Ja (>1500 uur) → vervang de lamp → NEE: Continue
⚠️ Typische oorzaken:
Gradiëntelutie met verschillende UV-cutoff van de fasen
Instabiele kolomtemperatuur
Autosampler-contaminatie van de naald/septum
UV-lamp oud (>1500h)
Detector-flowcel vervuild
Kolom niet geëquilibreerd (<10 kolomvolumes)
✓ Oplossingen:
✓ Kolom voor-equilibreren gedurende 10-15 kolomvolumes bij 100% A
✓ Kolomthermostaat aan, T 30-40°C stabiel
✓ Reinig de detector-flowcel met een 50:50 ACN:H2O-oplossing
✓ Vervang de D2-lamp indien >1500h
✓ Gebruik baseline subtraction (Chromeleon, native Empower-functie)
Geen piek / verloren piek (no peak) critical
Symptoom: De verwachte analytpiek verschijnt niet op het chromatogram
🔍 Diagnostische boom:
1. Heeft de injectie daadwerkelijk plaatsgevonden? → JA: Controleer het autosampler-log, de pompdruk (moet dalen tijdens de injectie) → NEE: Autosampler-probleem → controleer de loop, de naald, het monster in de vial
2. Zit het monster in de vial (correct volume, niet verdampt)? → JA: Continue → NEE: Geen monster — opnieuw pipetteren
3. Monsterstabiliteit — >24h geleden bereid? → JA: Ja → degradatie. Bereid een vers monster opnieuw. → NEE: Continue
4. Controleer de detectiegolflengte t.o.v. de λmax van de stof → JA: Detectie bij λ komt NIET overeen met λmax → geen signaal. Scan DAD 200-400nm. → NEE: Continue
5. Test: injecteer een zuivere standaard (van bekende concentratie, vers) → JA: De standaard geeft een piek → probleem met het monster (matrix, derivatisering) → NEE: Ook geen piek met de standaard → systeemprobleem (kolom, fase, gradiënt)
⚠️ Typische oorzaken:
Monster niet uit de vial genomen (autosampler-bug)
Monster gedegradeerd (>24h pH/temp/licht)
Detectie bij de verkeerde golflengte
Verkeerde mobiele fase (bijv. vergeten TFA)
Kolom omgekeerd / verkeerde stationaire fase
De stof elueert op het front (V0) → niet vastgehouden, niet zichtbaar
✓ Oplossingen:
✓ Bereid een vers monster opnieuw volgens het exacte protocol
✓ UV-Vis DAD-scan 200-400nm + zoeken naar λmax
✓ Controleer de samenstelling van de mobiele fase — is TFA toegevoegd?
✓ Test de omgekeerde kolomrichting (voorzichtig!)
✓ Voor retentie <1 min — verlaag de % B, MeOH in plaats van ACN
✓ Controleer de tabel "expected_rt" in wp_molgod_hplc_methods
Druk te hoog (pressure too high) critical
Symptoom: Pompdruk > 80% van het kolommaximum of systeem-shutdown met high-pressure error
🔍 Diagnostische boom:
1. Controleer of de kolom correct is aangesloten (richting van de pijl) → JA: OK → NEE: Kolom omgekeerd → draai om (nooit "achterstevoren" gebruiken)
2. Test: verwijder de kolom uit het systeem, laat alleen pomp+detector draaien → JA: Druk daalt naar <50 bar → probleem in de kolom (verstopt) → NEE: Druk blijft hoog → in-line filter verstopt, frit vervuild
3. Controleer het pre-kolomfilter (in-line frit) → JA: Vervuild en bruin → vervangen → NEE: Continue
4. Spoel de kolom terug met 50:50 ACN:H2O zonder de kolom — verdwijnt het? → JA: Deeltjes vast in de eerste mm — een flush van 30 min kan het herstellen → NEE: Vervang de kolom
Gradiënt met bufferfase + veel organisch → zoutprecipitatie
✓ Oplossingen:
✓ Filtreer het monster ALTIJD door 0.22 µm PVDF vóór injectie
✓ Vervang het in-line filter elke 100 injecties (of wanneer de druk >20% stijgt)
✓ Gebruik GEEN >20mM fosfaatbuffer + >70% ACN (het zout slaat neer)
✓ Spoel de kolom 30 min met 50:50 ACN:H2O in de omgekeerde richting (wanneer de fabrikant dit toestaat)
✓ Pre-kolom 4×3mm ter bescherming van de hoofdkolom
Spookpieken (ghost peaks) high
Symptoom: Onverklaarde pieken op het chromatogram die afwezig zijn in de kalibratie
🔍 Diagnostische boom:
1. Test: blanco injectie (zuiver monsteroplosmiddel) → JA: Er verschijnt een spookpiek → contaminatie van het systeem of de eluenten → NEE: Verschijnt alleen bij het monster → matrix
2. Groeit de spookpiek met de gradiënt (elueert bij hoog %B)? → JA: Ja → overladen kolom of sterk vastgehouden uit een vorige run → NEE: Onafhankelijk van de gradiënt → autosampler carryover
3. Increase carryover wash (between injections) → JA: Helpt → carryover was de oorzaak. Sterker wasprotocol. → NEE: Continue
4. Injectie van zuiver water — is er een piek? → JA: Ja → contaminatie van de waterbron (organische stoffen uit het DI-systeem) → NEE: Continue
⚠️ Typische oorzaken:
Carryover in de autosampler-naald/loop
Contaminatie van het eluens (zelfs HPLC-grade)
Sterk vastgehouden componenten uit vorige runs
Plastic in de vials (ftalaten, PEG uit de doppen)
DI-water onvoldoende gezuiverd
✓ Oplossingen:
✓ Versterk het wasprotocol: 100% B → 100% A → 50:50 (3 cycli)
✓ Sterke was: 100% DMSO of 100% MeOH vóór de kalibratie
✓ Filtreer de eluenten door 0.22 µm PTFE bij twijfel
✓ Gebruik amberkleurig glas + doppen met Teflon-coating voor monsters
✓ Periodieke gradiëntramp naar 100% B gedurende 10 min (clean-out)
📚 Wetenschappelijke referenties (Chicago Author-Date) — klik om uit te klappen
Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. Introduction to Modern Liquid Chromatography. 3rd ed. John Wiley & Sons. Chapter 17 (Troubleshooting) pp. 559-616. ISBN 978-0-470-16754-0. https://doi.org/10.1002/9780470508183 [link ↗]
Dolan, John W.. 2014. LC Troubleshooting (monthly column 1989-2024). LCGC North America. [link ↗] — John Dolan 35-letnia seria miesięcznych artykułów problemowych
Kromidas, Stavros. 2017. HPLC Made to Measure: A Practical Handbook for Optimization. 2nd ed. Wiley-VCH. ISBN 978-3-527-31377-1. — Praktyczny przewodnik problem-solving dla labs analitycznych
Dolan, John W.. 2013. When to Modify Method Conditions. 192-199. [link ↗] — Decision flow for changing flow rate / temperature / %B vs swapping columns.
Dong, Michael W.. 2019. HPLC and UHPLC for Practicing Scientists. 2nd ed. Wiley. ISBN 978-1-119-31378-3. https://doi.org/10.1002/9781119313793 [link ↗] — Chapter 9 covers troubleshooting modern UHPLC systems (sub-2 µm particles).
Snyder, L. R., J. J. Kirkland, and J. L. Glajch. 1997. Practical HPLC Method Development. 2nd ed. Wiley. ISBN 978-0-471-00703-6. — Method-development companion volume with troubleshooting cross-refs.
Carr, Peter W.. 2009. The new physical chemistry of HPLC. 1764-1772. https://doi.org/10.1016/j.chroma.2008.11.094 [link ↗] — Theoretical basis for diagnosing efficiency losses (mass-transfer, eddy diffusion).
Heyden, Yvan Vander, et al.. 2009. Robustness of pharmaceutical liquid chromatographic methods. 2120-2129. https://doi.org/10.1016/j.jchromb.2008.10.052 [link ↗] — How to diagnose method failures vs. system failures (Plackett-Burman).
Engelhardt, Heinz. 2014. 100 Years of Chromatography. 2nd ed. Wiley-VCH. ISBN 978-3-527-33473-5. — Historical context for ghost-peak phenomenology (silica chemistry).
Stoll, Dwight R., and Peter W. Carr. 2017. Two-Dimensional Liquid Chromatography: A State of the Art Tutorial. 519-531. https://doi.org/10.1021/acs.analchem.6b03506 [link ↗]
Carr, Peter W.. 2009. The new physical chemistry of HPLC. 1764-1772. https://doi.org/10.1016/j.chroma.2008.11.094 [link ↗]
Wu, Naijun, and Anton M. Clausen. 2007. Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations. 1167-1182. https://doi.org/10.1002/jssc.200700026 [link ↗]
Engelhardt, Heinz. 2014. 100 Years of Chromatography. 2nd ed. Wiley-VCH. ISBN 978-3-527-33473-5.
Vivó-Truyols, Gabriel, and Hans-Gerd Janssen. 2010. Probabilistic approach to peak deconvolution in chromatography. 8525-8531. https://doi.org/10.1021/ac101742z [link ↗]
🧪 Oplosbaarheid en compatibiliteit met oplosmiddelen MolGod_SOLUB_1
Molecuul
Citric Acid
Formule
C6H8O7
logP
-1.70
Massa (g/mol)
192.12
Polariteit
Hydrofiel (polair)
⚠️ HSP-schatting (literatuur / group contribution). Indicatieve gegevens — vervangen geen experimenteel onderzoek.
Oplosbaarheidstheorie (toegepast bij de voorspelling van compatibiliteit):
Yalkowsky, Samuel H., and Shri C. Valvani. 1980. "Solubility and Partitioning I: Solubility of Nonelectrolytes in Water." Journal of Pharmaceutical Sciences 69 (8): 912–922. https://doi.org/10.1002/jps.2600690814 — General Solubility Equation (GSE): logS = 0.5 − logP − 0.01(MP−25).
Hansen, Charles M. 2007. Hansen Solubility Parameters: A User's Handbook. 2nd ed. CRC Press. https://doi.org/10.1201/9781420006834 — HSP-triplet (dD, dP, dH) + Ra-formule.
Stefanis, E., and C. Panayiotou. 2008. "Prediction of Hansen Solubility Parameters with a New Group-Contribution Method." Int J Thermophys 29: 568–585. https://doi.org/10.1007/s10765-008-0415-z
Reichardt, Christian, and Thomas Welton. 2011. Solvents and Solvent Effects in Organic Chemistry. 4th ed. Wiley-VCH. https://doi.org/10.1002/9783527632220 — E_T(30) polarity scale, solwatochromia.
Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. Introduction to Modern Liquid Chromatography. 3rd ed. Wiley. https://doi.org/10.1002/9780470508183 — Eluotropic series, polarity index.
Van Krevelen, D. W., and K. Te Nijenhuis. 2009. Properties of Polymers. 4th ed. Elsevier. https://doi.org/10.1016/B978-0-08-054819-7.X0001-5 — Hoftyzer–Van Krevelen group contribution dla dD/dP/dH z SMILES.
Marcus, Yizhak. 1998. The Properties of Solvents. Wiley Series in Solution Chemistry, Vol. 4. ISBN 9780471983699 — Volledige tabellarische set van 250+ oplosmiddelen (ε, μ, doniciteit, acceptorgetallen).
PubChem Compound Database — CAS 77-92-9 lookup ↗ — logP (XLogP3), water solubility experimental + predicted.
Volledige bibliografie in het accordeon REFERENTIES (onderaan de pagina) — Chicago Manual of Style 17th ed., Author-Date.
🧮 Oplosbaarheidscalculator
Oplosbaarheid:—
logS:—
Methode:—
⚠️ —
Oplosbaarheid vs. temperatuur
🌐 Hansen Solubility Sphere (3D)
Hoe dichter bij het molecuul (rode bol), hoe beter het oplosmiddel. · Geavanceerd: labels + raster + assen + pulsatie.
Uw molecuul
Goed (Ra < 5)
Gemiddeld (Ra 5-10)
Zwak (Ra > 10)
📚 Databronnen HSP + Ra
Chen Y; Jin J; Xu X; Zhang H; Zhu L. 2026. "Effect of oil-soluble emulsifiers on the self-assembly behaviors of citric acid esters in bulk and emulsified systems." Food research international (Ottawa, Ont.). https://doi.org/10.1016/j.foodres.2025.117896. [DOI ↗]
Atmaca YB; Kehr NS. 2026. "Synthesis of citric acid-coated nanomaterials releasing oxygen and antioxidant vitamin E and investigation of their effects on healthy and cancer cells under hypoxic and normoxic conditions." Biomedical materials (Bristol, England). https://doi.org/10.1088/1748-605X/ae5e12. [DOI ↗]
Hategekimana F; Elçin AE; Elçin YM. 2026. "Green synthesis of caffeine-catalyzed citric acid-PPG/PEG crosslinked alginate hydrogel scaffolds for prospective biomedical applications." International journal of biological macromolecules. https://doi.org/10.1016/j.ijbiomac.2026.151850. [DOI ↗]
Ma CM; Liu WR; Xu Y; Zhang G; Xu XY; Wang B. 2026. "Preparation, characterization and toxicological evaluation of tapioca starch/chitosan/anhydrous citric acid composite edible films and their application in cooked rice." International journal of biological macromolecules. https://doi.org/10.1016/j.ijbiomac.2026.151712. [DOI ↗]
Hirano S; Oshima T; Inada A; Tsuruda T. 2026. "Dissolving Amyloid Fibrils with Natural Deep Eutectic Solvents: Citric Acid-Glycerol Achieves Superior Solubilization and Partial Protein Refolding." ACS applied bio materials. https://doi.org/10.1021/acsabm.5c02553. [DOI ↗]
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP), Villa RE, Azimonti G, Bonos E, Christensen H, Durjava M, Dusemund B, Gehring R, Glandorf B, Kouba M, López-Alonso M, Marcon F, Nebbia C, Pechová A, Prieto-Maradona M, Theodoridou K, Yurkov A, Dulak-Lis M, Galobart J, Vettori MV, Villa AN, Pettenati E, Valeri P.. 2026. "Safety and efficacy of the feed additives consisting of citric acid anhydrous and citric acid monohydrate produced by fermentation with <i>Aspergillus niger</i>CGMCC 6.466 for all animal species (Sunshine Biotech International)." . https://doi.org/10.2903/j.efsa.2026.10031. [DOI ↗]
York G; Kelly AW; Robison L; Iuzzolino L; Lee AY. 2025. "Revisiting the solid-state landscape of creatine citric acid: A salt or a cocrystal?." Journal of pharmaceutical sciences. https://doi.org/10.1016/j.xphs.2025.01.023. [DOI ↗]
Ugarte-Pereyra C; Argyri SM; Bordes R; Vincent-Bonnieu S; Beaucé J; Binks BP. 2025. "Design of oleofoams from citric acid esters of mono-/diglycerides." Food research international (Ottawa, Ont.). https://doi.org/10.1016/j.foodres.2025.117119. [DOI ↗]
Methode: Group Contribution (GC) — snelle schatting van δD/δP/δH uit logP wanneer er geen experimentele gegevens zijn. Nauwkeurigheid ±2 MPa^½. Voor meer precisie → HSPiP-software.
📊 Automatisch geëxtraheerde onderwerpen uit de abstracts van 2 publicaties voor CAS 77-92-9.
Algoritme: TF-IDF (Salton & Buckley 1988) — termfrequentie × inverse documentfrequentie.
Inne nazwy: kwasek cytrynowy, kwas 2-hydroksypropanotrójkarboksylowy
Zastosowania
Regulator kwasowości w przetworach domowych (dżemy, kompoty)
Środek zakwaszający do napojów i deserów
Usuwanie kamienia z czajników i ekspresów
Konserwant żywności (E330)
Domowy peeling enzymatyczny do twarzy
Specyfikacja
Waga netto: 1000g, przechowywać w suchym miejscu w szczelnie zamkniętym opakowaniu. Rozpuszczalny w wodzie (27g/100ml w 25°C).
Najczęściej zadawane pytania
Jak używać kwasu cytrynowego do odkamieniania czajnika?
Rozpuść 2-3 łyżki proszku w 500ml wody, zagotuj mieszaninę w czajniku, pozostaw na 15 minut, dokładnie wypłucz. Unikaj stosowania do aluminium.
Czy kwas cytrynowy jest bezpieczny dla dzieci?
Tak, w małych ilościach (jako E330) jest dopuszczony do żywności. Nie stosować czystego proszku doustnie – może podrażniać błony śluzowe.
Czy wiesz, że kwas cytrynowy naturalnie występuje w cytrusach?
Jak odróżnić kwas cytrynowy spożywczy od technicznego?
Spożywczy ma czystość min. 99,7% i certyfikat HACCP, techniczny może zawierać zanieczyszczenia. Sprawdź oznaczenie na opakowaniu.
Źródła i literatura
PubChem — National Library of Medicine: Właściwości fizykochemiczne kwasu cytrynowego (CID [CAS?]). pubchem.ncbi.nlm.nih.gov
Rozporządzenie UE 1333/2008: Dopuszczenie E330 jako dodatku do żywności.
Karta charakterystyki produktu: Zawiera informacje o bezpiecznym stosowaniu i przechowywaniu.
⚠ UWAGA — ODCZYNNIK CHEMICZNY
Kwas cytrynowy (C6H8O7) powszechnie znana jako kwasek cytrynowy, kwas cytrynowy to odczynnik chemiczny przeznaczony wyłącznie do zastosowań laboratoryjnych, badawczych i profesjonalnych. Numer CAS: 77-92-9 Numer WE (EC): 201-069-1 Nazwa IUPAC:kwas 2-hydroksypropano-1,2,3-trikarboksylowy Nazwa łacińska (Farmakopea):Acidum citricum
NIE NADAJE SIĘ DO SPOŻYCIA przez ludzi ani zwierzęta. Produkt nie jest lekiem, suplementem diety, kosmetykiem ani środkiem spożywczym. Jakiekolwiek inne zastosowanie niż laboratoryjne lub przemysłowe jest niezgodne z przeznaczeniem produktu.
Wymagane środki ochrony osobistej: rękawice ochronne, okulary lub gogle, fartuch laboratoryjny, praca w dobrze wentylowanym pomieszczeniu lub pod wyciągiem chemicznym.
Przed użyciem zapoznaj się z kartą charakterystyki substancji (SDS/MSDS) zgodnie z rozporządzeniem REACH (WE) 1907/2006 oraz CLP (WE) 1272/2008. Sprzedaż wyłącznie do celów technicznych.
Snyder, Lloyd R., John W. Dolan, and Joseph J. Kirkland. 2010. Introduction to Modern Liquid Chromatography. Wiley. — Chapter 9 — gradient elution, LSS theory (cited as Snyder et al. 2010 in tool description).
Schoenmakers, Peter J. 1986. Optimization of Chromatographic Selectivity: A Guide to Method Development. Elsevier. — Numerical optimization of gradient programs.
Snyder, L. R., and J. W. Dolan. 2007. High-Performance Gradient Elution: The Practical Application of the Linear-Solvent-Strength Model. Wiley. — Foundational LSS reference for the %B_init = 5 + 8·logP heuristic implemented here.
Nikitas, Pavlos, and Adrian Pappa-Louisi. 2009. "Retention models for isocratic and gradient elution in reversed-phase liquid chromatography." Journal of Chromatography A 1216: 1737-1755. [DOI ↗] — Modern review of gradient retention models — basis for non-LSS extensions.
Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772. [DOI ↗]
Dong, Michael W. 2019. HPLC and UHPLC for Practicing Scientists. Wiley. https://doi.org/10.1002/9781119313793. — Modern UHPLC gradient programming, sub-2 µm scaling rules.
Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations." Journal of Separation Science 30: 1167-1182. [DOI ↗]
Stoll, Dwight R., and Peter W. Carr. 2017. "Two-Dimensional Liquid Chromatography: A State of the Art Tutorial." Analytical Chemistry 89: 519-531. [DOI ↗] — Reference for orthogonal gradient design (2D-LC second dimension).
Dolan, John W.. 2013. "When to Modify Method Conditions." LCGC North America 31: 192-199.
Meyer, Veronika R. 2010. Practical High-Performance Liquid Chromatography. Wiley. — Chapter 7 — practical gradient design with isokratyczny scouting.
Stoll, Dwight R., and Peter W. Carr. 2017. "Two-Dimensional Liquid Chromatography: A State of the Art Tutorial." Analytical Chemistry 89: 519-531. [DOI ↗]
Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772. [DOI ↗]
Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations." Journal of Separation Science 30: 1167-1182. [DOI ↗]
Engelhardt, Heinz. 2014. 100 Years of Chromatography. Wiley-VCH.
Vivó-Truyols, Gabriel, and Hans-Gerd Janssen. 2010. "Probabilistic approach to peak deconvolution in chromatography." Analytical Chemistry 82: 8525-8531. [DOI ↗]
REST: /wp-json/molgod/v1/hplc/gradient/77-92-9
🌈 Detector + golflengte (UV/Vis)184 nm
Verbinding
1,2,3-Propanetricarboxylic acid, 2-hydroxy-
λmax
184 nm
λmin
—
εmax (M⁻¹·cm⁻¹)
—
Oplosmiddel (referentie)
gas phase or unknown (NIST WebBook)
Voorgestelde λ
184 nm
Aanbevolen detector
ELSD
Alternatieven
RID, MS, CAD
Gegevensbron: NIST WebBook UVVis JCAMP — peak picked from spectrum
⚠ Compatibiliteit met mobiele fase
critical
λ=184 nm < UV-cutoff Water (HPLC-grade) (190 nm) — oplosmiddel absorbeert, meting niet mogelijk.
critical
λ=184 nm < UV-cutoff 0.1% TFA in water (210 nm) — oplosmiddel absorbeert, meting niet mogelijk.
critical
λ=184 nm < UV-cutoff 20 mM phosphate pH 7 (200 nm) — oplosmiddel absorbeert, meting niet mogelijk.
advisory
Werken onder 220 nm vereist: oplosmiddelen van HPLC-kwaliteit, ontgassing van de mobiele fase, een schone buffer (vermijd TFA/acetaat) en een deuteriumlamp in goede staat.
Skoog, Douglas A., F. James Holler, and Stanley R. Crouch. 2017. "Principles of Instrumental Analysis." 7th ed. Cengage Learning. ISBN 978-1-305-57721-3.
Perkampus, Heinz-Helmut. 1992. "UV-VIS Spectroscopy and Its Applications." Springer. ISBN 978-3-642-77479-9. →
Sadek, Paul C.. 2002. "The HPLC Solvent Guide." 2nd ed. Wiley-Interscience. ISBN 978-0-471-41138-4.
Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. "Introduction to Modern Liquid Chromatography." 3rd ed. Wiley. ISBN 978-0-470-16754-0. →
Dong, Michael W.. 2019. "HPLC and UHPLC for Practicing Scientists." 2nd ed. Wiley. ISBN 978-1-119-31378-3. →
Stoll, Dwight R., and Peter W. Carr. 2017. "Two-Dimensional Liquid Chromatography: A State of the Art Tutorial." Analytical Chemistry 89: 519-531 →
Vivó-Truyols, Gabriel, and Hans-Gerd Janssen. 2010. "Probabilistic approach to peak deconvolution in chromatography." Analytical Chemistry 82: 8525-8531 →
Kazakevich, Yuri V., and Rosario LoBrutto, eds.. 2007. "HPLC for Pharmaceutical Scientists." Wiley-Interscience. ISBN 978-0-471-68162-4. →
Kim, Sunghwan, et al.. 2023. "PubChem 2023 update." Nucleic Acids Research 51: D1373-D1380 →
Stoll, Dwight R., and Peter W. Carr. 2017. "Two-Dimensional Liquid Chromatography: A State of the Art Tutorial." Analytical Chemistry 89: 519-531 →
Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772 →
Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations." Journal of Separation Science 30: 1167-1182 →
Engelhardt, Heinz. 2014. "100 Years of Chromatography." 2nd ed. Wiley-VCH. ISBN 978-3-527-33473-5.
Vivó-Truyols, Gabriel, and Hans-Gerd Janssen. 2010. "Probabilistic approach to peak deconvolution in chromatography." Analytical Chemistry 82: 8525-8531 →
REST: /wp-json/molgod/v1/hplc/detector/77-92-9
📐 HPLC-pieksymmetriecalculator (USP Tf / As)
Bereken de USP-tailingfactor (Tf) en de asymmetrie (As) uit de piekhalfbreedtes. Voer a (linker halfbreedte) en b (rechter halfbreedte) in, gemeten op 5% of 10% van de piekhoogte.
📚 Referenties (Chicago Author-Date)
USP General Chapter <621>. 2024. "Chromatography." United States Pharmacopeial Convention. [link ↗] — Defines USP Tailing Factor T = (a+b)/(2a) measured at 5% peak height.
International Council for Harmonisation (ICH). 2023. "Validation of Analytical Procedures Q2(R2)." ICH Expert Working Group. [link ↗] — Tailing factor is a system suitability parameter (Section 6).
Foley, Joe P., and John G. Dorsey. 1983. "Equations for calculation of chromatographic figures of merit for ideal and skewed peaks." Analytical Chemistry 55: 730-737 https://doi.org/10.1021/ac00255a033 [link ↗] — Original asymmetry factor As = b/a at 10% height (Foley & Dorsey 1983).
Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. "Introduction to Modern Liquid Chromatography." Wiley. https://doi.org/10.1002/9780470508183 [link ↗] — Chapter 2.4 — peak shape diagnostics and remedies.
Dolan, John W.. 2003. "Peak tailing and resolution." LCGC North America 21: 610-614 [link ↗] — How tailing factor degrades effective resolution.
Vivó-Truyols, Gabriel, and Hans-Gerd Janssen. 2010. "Probabilistic approach to peak deconvolution in chromatography." Analytical Chemistry 82: 8525-8531 https://doi.org/10.1021/ac101742z [link ↗] — Modern numerical deconvolution for asymmetric peaks.
Kromidas, Stavros. 2017. "HPLC Made to Measure: A Practical Handbook for Optimization." Wiley-VCH. — Practical Tf and As thresholds for routine QC.
Dong, Michael W.. 2019. "HPLC and UHPLC for Practicing Scientists." Wiley. https://doi.org/10.1002/9781119313793 [link ↗]
Heyden, Yvan Vander, et al.. 2009. "Robustness of pharmaceutical liquid chromatographic methods." Journal of Chromatography B 877: 2120-2129 https://doi.org/10.1016/j.jchromb.2008.10.052 [link ↗]
Stoll, Dwight R., and Peter W. Carr. 2017. "Two-Dimensional Liquid Chromatography: A State of the Art Tutorial." Analytical Chemistry 89: 519-531 https://doi.org/10.1021/acs.analchem.6b03506 [link ↗]
Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772 https://doi.org/10.1016/j.chroma.2008.11.094 [link ↗]
Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations." Journal of Separation Science 30: 1167-1182 https://doi.org/10.1002/jssc.200700026 [link ↗]
Engelhardt, Heinz. 2014. "100 Years of Chromatography." Wiley-VCH.
Vivó-Truyols, Gabriel, and Hans-Gerd Janssen. 2010. "Probabilistic approach to peak deconvolution in chromatography." Analytical Chemistry 82: 8525-8531 https://doi.org/10.1021/ac101742z [link ↗]
📊 Calculator voor resolutie en schotelgetal (Rs, N, H)
Bereken de resolutie Rs, het aantal theoretische schotels N en de HETP (H) voor een paar HPLC-pieken. Voer de retentietijden, piekbreedtes (op 50% of aan de basis) en de kolomlengte in.
📚 Referenties (Chicago Author-Date)
Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. "Introduction to Modern Liquid Chromatography." 3rd ed. John Wiley & Sons. ISBN 978-0-470-16754-0. https://doi.org/10.1002/9780470508183 [link ↗] — Chapter 2 covers resolution, plate count and HETP fundamentals (Snyder et al. 2010).
USP General Chapter <621>. 2024. "Chromatography." USP-NF 2024 ed. United States Pharmacopeial Convention. [link ↗] — Defines Rs >= 1.5 acceptance criterion and N calculation methods.
Dolan, John W.. 2003. "How much resolution is enough?." LCGC North America 21: 350-353 [link ↗] — Practical guidance on Rs targets for routine method development.
Van Deemter, J. J., F. J. Zuiderweg, and A. Klinkenberg. 1956. "Longitudinal diffusion and resistance to mass transfer as causes of nonideality in chromatography." Chemical Engineering Science 5: 271-289 https://doi.org/10.1016/0009-2509(56)80003-1 [link ↗] — Origin of N = 5.54·(tr/w0.5)² half-height plate count formulation.
Giddings, J. Calvin. 1965. "Dynamics of Chromatography, Part I: Principles and Theory." Marcel Dekker. ISBN 978-0-8247-1357-7. — Resolution equation Rs = (1/4)·√N·(α-1)/α·k/(1+k) (master equation).
Foley, Joe P., and John G. Dorsey. 1983. "Equations for calculation of chromatographic figures of merit for ideal and skewed peaks." Analytical Chemistry 55: 730-737 https://doi.org/10.1021/ac00255a033 [link ↗] — Skewed-peak corrections to apparent N.
Knox, John H.. 1977. "Practical aspects of LC theory." Journal of Chromatographic Science 15: 352-364 https://doi.org/10.1093/chromsci/15.9.352 [link ↗]
Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772 https://doi.org/10.1016/j.chroma.2008.11.094 [link ↗]
Dong, Michael W.. 2019. "HPLC and UHPLC for Practicing Scientists." 2nd ed. Wiley. ISBN 978-1-119-31378-3. https://doi.org/10.1002/9781119313793 [link ↗]
Stoll, Dwight R., and Peter W. Carr. 2017. "Two-Dimensional Liquid Chromatography: A State of the Art Tutorial." Analytical Chemistry 89: 519-531 https://doi.org/10.1021/acs.analchem.6b03506 [link ↗]
Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772 https://doi.org/10.1016/j.chroma.2008.11.094 [link ↗]
Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations." Journal of Separation Science 30: 1167-1182 https://doi.org/10.1002/jssc.200700026 [link ↗]
Engelhardt, Heinz. 2014. "100 Years of Chromatography." 2nd ed. Wiley-VCH. ISBN 978-3-527-33473-5.
Vivó-Truyols, Gabriel, and Hans-Gerd Janssen. 2010. "Probabilistic approach to peak deconvolution in chromatography." Analytical Chemistry 82: 8525-8531 https://doi.org/10.1021/ac101742z [link ↗]
🧪 System Suitability — live calculator (USP <621>)
Voer gegevens van 5-6 injecties in (areas, tr, tailing, plates) — de calculator berekent %RSD, gemiddelden en controleert de conformiteit met USP <621>. Je kunt CSV plakken (door komma's gescheiden) of afzonderlijke waarden bewerken.
📚 Referenties (Chicago Author-Date)
USP General Chapter <621>. 2024. "Chromatography (System Suitability section)." USP-NF 2024 ed. United States Pharmacopeial Convention. [link ↗] — Defines RSD area < 2%, tailing < 2.0, N > 2000 acceptance criteria.
International Council for Harmonisation (ICH). 2023. "Validation of Analytical Procedures Q2(R2)." ICH Expert Working Group. [link ↗] — Section 5.4 — system suitability is part of method validation.
US Food and Drug Administration (FDA). 2018. "Reviewer Guidance: Validation of Chromatographic Methods." US Food and Drug Administration. [link ↗] — CDER reviewer perspective on chromatographic validation expectations.
Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. "Introduction to Modern Liquid Chromatography." 3rd ed. Wiley. — Chapter 2 — system suitability fundamentals (RSD, Tf, N).
Heyden, Yvan Vander, et al.. 2009. "Robustness of pharmaceutical liquid chromatographic methods." — Robustness vs. system suitability — design-of-experiments framework.
Rozet, Eric, et al.. 2013. "Analysis of recent pharmaceutical regulatory documents on analytical method validation."
European Medicines Agency (EMA). 2011. "Guideline on bioanalytical method validation EMEA/CHMP/EWP/192217/2009." EMA. [link ↗] — EMA companion guideline with bioanalytical SS criteria.
Dong, Michael W.. 2019. "HPLC and UHPLC for Practicing Scientists." 2nd ed. Wiley. — UHPLC-specific suitability adjustments (n=5 vs. n=6).
Kazakevich, Yuri V., and Rosario LoBrutto, eds.. 2007. "HPLC for Pharmaceutical Scientists." Wiley-Interscience.
AOAC International. 2016. "Appendix F: Guidelines for Standard Method Performance Requirements." AOAC INTERNATIONAL. [link ↗] — Alternative SS thresholds for food/dietary samples.
Stoll, Dwight R., and Peter W. Carr. 2017. "Two-Dimensional Liquid Chromatography: A State of the Art Tutorial."
Carr, Peter W.. 2009. "The new physical chemistry of HPLC."
Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations."
Engelhardt, Heinz. 2014. "100 Years of Chromatography." 2nd ed. Wiley-VCH.
Vivó-Truyols, Gabriel, and Hans-Gerd Janssen. 2010. "Probabilistic approach to peak deconvolution in chromatography."
⚗️ Jonizacja w funkcji pH (Henderson-Hasselbalch)MolGod_PHION_1
Typ: Kwas · pKa: 3.13 · pKa2: 4.76
pH
% jonowy
% niejonowy
0
0.1 %
99.9 %
2
6.9 %
93.1 %
4
88.1 %
11.9 %
6
99.9 %
0.1 %
8
100.0 %
0.0 %
10
100.0 %
0.0 %
12
100.0 %
0.0 %
14
100.0 %
0.0 %
Źródła dla tej substancji (9)
CRC Handbook 91st ed. Lide, David R., ed. 2010. CRC Handbook of Chemistry and Physics. 91st ed. Boca Raton, FL: CRC Press.
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Bibliografia metody (Chicago)
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Goldberg, Robert N., Nand Kishore, and Rebecca Lennen. 2002. "Thermodynamic Quantities for the Ionization Reactions of Buffers." Journal of Physical and Chemical Reference Data 31 (2): 231-370.
Haynes, William M., David R. Lide, and Thomas J. Bruno, eds. 2024. CRC Handbook of Chemistry and Physics. 105th ed. Boca Raton, FL: CRC Press.
Lide, David R., ed. 2010. CRC Handbook of Chemistry and Physics. 91st ed. Boca Raton, FL: CRC Press.
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Knox, Craig, Mike Wilson, Christen M. Klinger, Mark Franklin, Eponine Oler, Alex Wilson, Allison Pon, et al. 2024. "DrugBank 6.0: the DrugBank Knowledgebase for 2024." Nucleic Acids Research 52 (D1): D1265-D1275.
Zdrazil, Barbara, Eloy Felix, Fiona Hunter, Emma J. Manners, James Blackshaw, Sybilla Corbett, Marleen de Veij, et al. 2024. "The ChEMBL Database in 2023." Nucleic Acids Research 52 (D1): D1180-D1192.
Kanehisa, Minoru, Miho Furumichi, Yoko Sato, Masayuki Kawashima, and Mari Ishiguro-Watanabe. 2023. "KEGG for taxonomy-based analysis of pathways and genomes." Nucleic Acids Research 51 (D1): D587-D592.
Linstrom, Peter J., and William G. Mallard, eds. 2024. NIST Chemistry WebBook. NIST Standard Reference Database Number 69. Gaithersburg, MD: National Institute of Standards and Technology.
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Chen Y; Jin J; Xu X; Zhang H; Zhu L. 2026. "Effect of oil-soluble emulsifiers on the self-assembly behaviors of citric acid esters in bulk and emulsified systems." Food research international (Ottawa, Ont.). https://doi.org/10.1016/j.foodres.2025.117896. [DOI]
Atmaca YB; Kehr NS. 2026. "Synthesis of citric acid-coated nanomaterials releasing oxygen and antioxidant vitamin E and investigation of their effects on healthy and cancer cells under hypoxic and normoxic conditions." Biomedical materials (Bristol, England). https://doi.org/10.1088/1748-605X/ae5e12. [DOI]
Hategekimana F; Elçin AE; Elçin YM. 2026. "Green synthesis of caffeine-catalyzed citric acid-PPG/PEG crosslinked alginate hydrogel scaffolds for prospective biomedical applications." International journal of biological macromolecules. https://doi.org/10.1016/j.ijbiomac.2026.151850. [DOI]
Ma CM; Liu WR; Xu Y; Zhang G; Xu XY; Wang B. 2026. "Preparation, characterization and toxicological evaluation of tapioca starch/chitosan/anhydrous citric acid composite edible films and their application in cooked rice." International journal of biological macromolecules. https://doi.org/10.1016/j.ijbiomac.2026.151712. [DOI]
Hirano S; Oshima T; Inada A; Tsuruda T. 2026. "Dissolving Amyloid Fibrils with Natural Deep Eutectic Solvents: Citric Acid-Glycerol Achieves Superior Solubilization and Partial Protein Refolding." ACS applied bio materials. https://doi.org/10.1021/acsabm.5c02553. [DOI]
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP), Villa RE, Azimonti G, Bonos E, Christensen H, Durjava M, Dusemund B, Gehring R, Glandorf B, Kouba M, López-Alonso M, Marcon F, Nebbia C, Pechová A, Prieto-Maradona M, Theodoridou K, Yurkov A, Dulak-Lis M, Galobart J, Vettori MV, Villa AN, Pettenati E, Valeri P.. 2026. "Safety and efficacy of the feed additives consisting of citric acid anhydrous and citric acid monohydrate produced by fermentation with <i>Aspergillus niger</i>CGMCC 6.466 for all animal species (Sunshine Biotech International)." . https://doi.org/10.2903/j.efsa.2026.10031. [DOI]
York G; Kelly AW; Robison L; Iuzzolino L; Lee AY. 2025. "Revisiting the solid-state landscape of creatine citric acid: A salt or a cocrystal?." Journal of pharmaceutical sciences. https://doi.org/10.1016/j.xphs.2025.01.023. [DOI]
Ugarte-Pereyra C; Argyri SM; Bordes R; Vincent-Bonnieu S; Beaucé J; Binks BP. 2025. "Design of oleofoams from citric acid esters of mono-/diglycerides." Food research international (Ottawa, Ont.). https://doi.org/10.1016/j.foodres.2025.117119. [DOI]
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Lambert, Johann Heinrich. 1760. Photometria. Augsburg: Sumptibus Vidae.
📖 Wartość λmax = 184 nm pochodzi z bazy/literatury. Brak niezależnego potwierdzenia krzyżowego (NIST / CrossRef / PubChem) — weryfikacja krzyżowa niedostępna.
Bron: RTECS GE7350000; Lipnick et al. 1995, Food Chem. Toxicol. (1995). CAS 77-92-9.
LD50/LC50-gegevens zijn uitsluitend indicatief; zij vervangen niet het veiligheidsinformatieblad (SDS) noch een deskundige toxicologische beoordeling. GHS-classificatie voor de orale route (mg/kg bw) volgens UN GHS, 10e rev. 2023, Annex 1 §3.1.1.
Bibliografie (Chicago)
Hodge, Harold C., and James H. Sterner. 1949. "Tabulation of toxicity classes." American Industrial Hygiene Association Quarterly 10 (4): 93-96.
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💎 Kristalvormen / polymorfen2 formy w bazieMolGod_POLYMORPH_2
PUBChen Y; Jin J; Xu X; Zhang H; Zhu L. 2026. "Effect of oil-soluble emulsifiers on the self-assembly behaviors of citric acid esters in bulk and emulsified systems." Food research international (Ottawa, Ont.). https://doi.org/10.1016/j.foodres.2025.117896.
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Chen Y; Jin J; Xu X; Zhang H; Zhu L. 2026. "Effect of oil-soluble emulsifiers on the self-assembly behaviors of citric acid esters in bulk and emulsified systems." Food research international (Ottawa, Ont.). https://doi.org/10.1016/j.foodres.2025.117896. [DOI]
Atmaca YB; Kehr NS. 2026. "Synthesis of citric acid-coated nanomaterials releasing oxygen and antioxidant vitamin E and investigation of their effects on healthy and cancer cells under hypoxic and normoxic conditions." Biomedical materials (Bristol, England). https://doi.org/10.1088/1748-605X/ae5e12. [DOI]
Hategekimana F; Elçin AE; Elçin YM. 2026. "Green synthesis of caffeine-catalyzed citric acid-PPG/PEG crosslinked alginate hydrogel scaffolds for prospective biomedical applications." International journal of biological macromolecules. https://doi.org/10.1016/j.ijbiomac.2026.151850. [DOI]
Ma CM; Liu WR; Xu Y; Zhang G; Xu XY; Wang B. 2026. "Preparation, characterization and toxicological evaluation of tapioca starch/chitosan/anhydrous citric acid composite edible films and their application in cooked rice." International journal of biological macromolecules. https://doi.org/10.1016/j.ijbiomac.2026.151712. [DOI]
Hirano S; Oshima T; Inada A; Tsuruda T. 2026. "Dissolving Amyloid Fibrils with Natural Deep Eutectic Solvents: Citric Acid-Glycerol Achieves Superior Solubilization and Partial Protein Refolding." ACS applied bio materials. https://doi.org/10.1021/acsabm.5c02553. [DOI]
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP), Villa RE, Azimonti G, Bonos E, Christensen H, Durjava M, Dusemund B, Gehring R, Glandorf B, Kouba M, López-Alonso M, Marcon F, Nebbia C, Pechová A, Prieto-Maradona M, Theodoridou K, Yurkov A, Dulak-Lis M, Galobart J, Vettori MV, Villa AN, Pettenati E, Valeri P.. 2026. "Safety and efficacy of the feed additives consisting of citric acid anhydrous and citric acid monohydrate produced by fermentation with <i>Aspergillus niger</i>CGMCC 6.466 for all animal species (Sunshine Biotech International)." . https://doi.org/10.2903/j.efsa.2026.10031. [DOI]
York G; Kelly AW; Robison L; Iuzzolino L; Lee AY. 2025. "Revisiting the solid-state landscape of creatine citric acid: A salt or a cocrystal?." Journal of pharmaceutical sciences. https://doi.org/10.1016/j.xphs.2025.01.023. [DOI]
Ugarte-Pereyra C; Argyri SM; Bordes R; Vincent-Bonnieu S; Beaucé J; Binks BP. 2025. "Design of oleofoams from citric acid esters of mono-/diglycerides." Food research international (Ottawa, Ont.). https://doi.org/10.1016/j.foodres.2025.117119. [DOI]
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📚 REFERENTIES (Verzamelde bibliografie, Chicago Author-Date) 108 items
Alle wetenschappelijke bronnen die in de accordeons hierboven voor CAS 77-92-9 worden geciteerd.Formaat: Chicago Manual of Style 17e ed., Author-Date-systeem.
AIST. 2026. Spectral Database for Organic Compounds (SDBS): CAS 77-92-9. Tsukuba, Japan: National Institute of Advanced Industrial Science and Technology. https://sdbs.db.aist.go.jp/. (Accessed 2026-11-12.)
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📄 Wetenschappelijke artikelen (peer-reviewed)
Stefanis, Emmanuel, and Costas Panayiotou. 2008. "Prediction of Hansen Solubility Parameters with a New Group-Contribution Method." International Journal of Thermophysics 29: 568-585. https://doi.org/10.1007/s10765-008-0415-z.
Stoll, Vincent S., and John S. Blanchard. 1990. "Buffers: Principles and Practice: In Methods in Enzymology, vol. 182." San Diego: Academic Press. https://doi.org/10.1016/0076-6879(90)82008-P.
European Parliament. 2008. "Regulation (EC) No 1272/2008 on Classification, Labelling and Packaging of Substances and Mixtures (CLP)." Official Journal of the European Union L 353: 1–1355.
United Nations. 2021. Globally Harmonized System of Classification and Labelling of Chemicals (GHS). 9th revised ed. ST/SG/AC.10/30/Rev.9. New York and Geneva: United Nations. https://unece.org/ghs-rev9-2021.
U.S. OSHA. 2026. "Occupational Safety and Health Guidance: CAS 77-92-9." Washington, DC: U.S. Occupational Safety and Health Administration. https://www.osha.gov/hazwoper. (Accessed 2026-11-12.)
National Fire Protection Association (2018) — NFPA 472: Standard for Competence of Responders to Hazardous Materials/Weapons of Mass Destruction Incidents https://www.nfpa.org/codes-and-standards/nfpa-472.
U.S. National Institute for Occupational Safety and Health (2024) — NIOSH Pocket Guide to Chemical Hazards https://www.cdc.gov/niosh/npg/.
Snyder, Lloyd R., John W. Dolan, and Joseph J. Kirkland. 2010. Introduction to Modern Liquid Chromatography. Wiley.
Schoenmakers, Peter J.. 1986. Optimization of Chromatographic Selectivity: A Guide to Method Development. Elsevier.
Snyder, L. R., and J. W. Dolan. 2007. High-Performance Gradient Elution: The Practical Application of the Linear-Solvent-Strength Model. Wiley.
Nikitas, Pavlos, and Adrian Pappa-Louisi. 2009. "Retention models for isocratic and gradient elution in reversed-phase liquid chromatography." Journal of Chromatography A 1216: 1737-1755. https://doi.org/10.1016/j.chroma.2008.10.005.
Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations." Journal of Separation Science 30: 1167-1182. https://doi.org/10.1002/jssc.200700026.
Engelhardt, Heinz. 2014. 100 Years of Chromatography. Wiley-VCH.
Vivó-Truyols, Gabriel, and Hans-Gerd Janssen. 2010. "Probabilistic approach to peak deconvolution in chromatography." Analytical Chemistry 82: 8525-8531. https://doi.org/10.1021/ac101742z.
Van Deemter, J. J., F. J. Zuiderweg, and A. Klinkenberg. 1956. "Longitudinal diffusion and resistance to mass transfer as causes of nonideality in chromatography." https://doi.org/10.1016/0009-2509(56)80003-1.
Giddings, J. Calvin. 1965. "Dynamics of Chromatography, Part I: Principles and Theory." Marcel Dekker.
Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations." https://doi.org/10.1002/jssc.200700026.
Snyder, L. R., J. J. Kirkland, and J. L. Glajch. 1997. "Practical HPLC Method Development." Wiley.
Vivó-Truyols, Gabriel, and Hans-Gerd Janssen. 2010. "Probabilistic approach to peak deconvolution in chromatography." https://doi.org/10.1021/ac101742z.
Sadek, Paul C.. 2002. "The HPLC Solvent Guide." Wiley-Interscience.
Foley, Joe P., and John G. Dorsey. 1983. "Equations for calculation of chromatographic figures of merit for ideal and skewed peaks." https://doi.org/10.1021/ac00255a033.
Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. "Introduction to Modern Liquid Chromatography." Wiley. https://doi.org/10.1002/9780470508183.
United States Pharmacopeial Convention. 2024. "USP <621> Chromatography." In United States Pharmacopeia and National Formulary, USP 47-NF 42. Rockville, MD: USP. https://www.uspnf.com/.
International Organization for Standardization. 2017. "ISO/IEC 17025:2017 General Requirements for the Competence of Testing and Calibration Laboratories." Geneva: ISO. https://www.iso.org/standard/66912.html.
Kolthoff, Izaak Maurits, and Philip J. Elving, eds. 1978. Treatise on Analytical Chemistry, Part I: Theory and Practice. 2nd ed. New York: Wiley-Interscience.
Skoog, Douglas A., F. James Holler, and Stanley R. Crouch. 2018. Principles of Instrumental Analysis. 7th ed. Boston: Cengage Learning.
Christian, Gary D., Purnendu K. Dasgupta, and Kevin A. Schug. 2014. Analytical Chemistry. 7th ed. Hoboken, NJ: Wiley.
Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. "Introduction to Modern Liquid Chromatography." John Wiley & Sons. https://doi.org/10.1002/9780470508183.
U.S. FDA. 2026. "FDA Guidance and Resources: CAS 77-92-9." Silver Spring, MD: U.S. Food and Drug Administration. https://www.fda.gov/media/74954/download. (Accessed 2026-11-12.)
International Organization for Standardization. 1994. "ISO 5725-2:1994 Accuracy (Trueness and Precision) of Measurement Methods and Results — Part 2: Basic Method for the Determination of Repeatability and Reproducibility of a Standard Measurement Method." Geneva: ISO. https://www.iso.org/standard/11834.html.
Grubbs, Frank E. 1950. "Sample Criteria for Testing Outlying Observations." Annals of Mathematical Statistics 21 (1): 27–58.
Dixon, Wilfrid J. 1950. "Analysis of Extreme Values." Annals of Mathematical Statistics 21 (4): 488–506.
Snedecor, George W., and William G. Cochran. 1989. Statistical Methods. 8th ed. Ames, IA: Iowa State University Press.
Student [William Sealy Gosset]. 1908. "The Probable Error of a Mean." Biometrika 6 (1): 1–25.
International Organization for Standardization. 2005. "ISO 3534-1:2006 Statistics — Vocabulary and Symbols — Part 1: General Statistical Terms and Terms Used in Probability." Geneva: ISO. https://www.iso.org/standard/40145.html.
Thompson, Michael, Stephen L. R. Ellison, and Roger Wood. 2002. "Harmonized Guidelines for Single-Laboratory Validation of Methods of Analysis." Pure and Applied Chemistry 74 (5): 835–855.
United Nations Economic Commission for Europe. 2024. European Agreement Concerning the International Carriage of Dangerous Goods by Road (ADR), Applicable as from 1 January 2025 (ECE/TRANS/352). Geneva: UNECE. https://unece.org/transport/dangerous-goods/adr-2025-edition.
Ministerstwo Klimatu i Srodowiska. 2026. "Baza Danych o Odpadach (BDO): CAS 77-92-9." Warszawa: Ministerstwo Klimatu i Srodowiska. https://bdo.mos.gov.pl/. (Accessed 2026-11-12.)
Pohanish, Richard P.. 2017. "Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens." Elsevier.
Lewis, Richard J.. 2012. "Sax's Dangerous Properties of Industrial Materials." Wiley.
NIOSH. 2024. "Pocket Guide to Chemical Hazards." U.S. Department of Health and Human Services. https://www.cdc.gov/niosh/npg/.
IPCS INCHEM. 2024. "International Programme on Chemical Safety — Waste Management Guidelines." WHO/UNEP/ILO. https://www.inchem.org/.
International Organization for Standardization. 2017. "ISO/IEC 17025:2017 General requirements for the competence of testing and calibration laboratories." ISO. https://www.iso.org/standard/66912.html.
World Health Organization. 2010. "WHO Good Manufacturing Practices for Pharmaceutical Products: Main Principles (WHO Technical Report Series No. 957, Annex 3)." WHO Press. https://www.who.int/publications/m/item/trs957-annex3.
Pharmaceutical Inspection Co-operation Scheme (PIC/S). 2021. "Guide to Good Manufacturing Practice for Medicinal Products PE 009-15." PIC/S Secretariat, Geneva. https://picscheme.org/en/publications.
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