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Kwas L-glutaminowy, CAS 56-86-0
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Kwas L-glutaminowy, CAS 56-86-0
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| Molecular formula | C5H9NO4 |
| Molecular weight | 147.13 g/mol |
| Melting point | 199 °C |
| Density | 1.46 g/cm³ |
| LogP (lipophilicity) | -3.69 |
| pKa | 2.19 |
| IUPAC name | (2S)-2-aminopentanedioic acid |
| SMILES | C(CC(=O)O)[C@@H](C(=O)O)N |
| InChIKey | WHUUTDBJXJRKMK-VKHMYHEASA-N |
Synonyms: L-glutamic acid · GLUTAMIC ACID · 56-86-0 · (2S)-2-Aminopentanedioic acid · L-glutamate
Data sources: PubChem (NLM/NIH), IUPAC Stability Constants Database (Pettit & Powell 1993)
Last updated: 2026-11-10
🎓 Badania akademickie: L-Glutamic Acid
SCIENTIFIC RESEARCH
| Property | Value | Unit | Conditions | Source |
|---|---|---|---|---|
| Density (ρ) | 1.4600 | g/cm³ | 25 °C (77 °F) | IUPAC Stability Constants Database (Pettit & Powell 1993) |
| Melting Point (mp) | 199.00 °C (390.2 °F) | decomp. | IUPAC Stability Constants Database (Pettit & Powell 1993) | |
| Boiling Point (bp) | Sublimes at 175 °C (347 °F) | PubChem (NIH/NLM) ↗ | ||
| Vapor Pressure | Vapor pressure: 1.7X10-8 mm Hg at 25 °C (77 °F) /Extrapolated from liquid-phase temperatures to a solid at 25 °C (77 °F)/ | PubChem (NIH/NLM) ↗ | ||
| Water Solubility | 8570 mg/L (at 25 °C (77 °F)) | PubChem (NIH/NLM) ↗ | ||
| pKa | 2.190 | 25 °C (77 °F) | IUPAC Stability Constants Database (Pettit & Powell 1993) |
C(CC(=O)O)[C@@H](C(=O)O)N InChI=1S/C5H9NO4/c6-3(5(9)10)1-2-4(7)8/h3H,1-2,6H2,(H,7,8)(H,9,10)/t3-/m0/s1
WHUUTDBJXJRKMK-VKHMYHEASA-N
Data sources: PubChem, NIST Chemistry WebBook, CRC Handbook of Chemistry and Physics (103rd ed.)
Last updated: 2026-07-11
| Property | Value | Unit | Conditions | Source |
|---|---|---|---|---|
| Melting point | 199.00 [2][6][11] | °C | decomp. | IUPAC Stability Constants Database (Pettit & Powell 1993) |
| Boiling point | rozkłada się [2][6][11] | — | przed wrzeniem (decomp.) | IUPAC Stability Constants Database (Pettit & Powell 1993) |
| Water solubility | 8.640 [2] | g/L | 25°C | IUPAC Stability Constants Database (Pettit & Powell 1993) |
| Density (ρ) | 1.4600 [2] | g/cm³ | 25°C | IUPAC Stability Constants Database (Pettit & Powell 1993) |
| pKa₁ | 2.190 [2][10] | — | 25°C | IUPAC Stability Constants Database (Pettit & Powell 1993) |
| pKa₂ | 4.250 [2][10] | — | 25°C | IUPAC Stability Constants Database (Pettit & Powell 1993) |
| pKa₃ | 9.670 [2][10] | — | 25°C | IUPAC Stability Constants Database (Pettit & Powell 1993) |
| logP (octanol/water) | -3.690 [2][8][9] | — | 25°C | IUPAC Stability Constants Database (Pettit & Powell 1993) |
GHS/CLP classification — Regulation (EC) No 1272/2008 + UN GHS Rev. 9 (2021).
⚠ Classification based on a consensus of sources (PubChem / supplier notifications) — not verified against the harmonised classification in Annex VI (CLP). The scope of hazards may be broader than the official classification; verify against the supplier's current safety data sheet before use.
Translations: CLP Regulation (EC) 1272/2008, Annexes III and IV. Data: PubChem/NLM.
References collected from all Safety Hub tabs. CAS: 56-86-0 ·
PubChem ↗
Tabs with their own references (Emergency, PPE, Storage, Waste) contain additional bibliographic entries within their respective sections.
Paste a series of replicate measurements (CSV, or one number per line). The calculator computes the mean, standard deviation and 95% CI, and detects outliers (Grubbs + Dixon Q).
x̄ = Σxᵢ / n — arithmetic means² = Σ(xᵢ - x̄)² / (n-1) — sample variances = √s² — standard deviationRSD% = (s / x̄) × 100% — relative standard deviationCI₉₅ = x̄ ± t(0.05, n-1) × s / √n — Student's tG = |xᵢ - x̄| / s — Grubbs' testQ = |xsuspect - xnearest| / |xmax - xmin| — Dixon Q-testSource: ICH Q2(R2) Validation of Analytical Procedures · ICH PDF ↗
Choose a buffer from the list of 20 popular systems → enter the target pH → get an exact recipe with the masses to weigh out.
Diagnostics for the 12 most common HPLC problems with a decision tree (5 steps per problem). Source: Snyder/Kirkland/Dolan 3rd ed. Chapter 17 + LCGC LC Troubleshooting columns 1989-2024.
Symptom: All peaks on the chromatogram are wider than expected (FWHM > 2× normal)
Symptom: Peaks have an extended "tail" on the late-elution side (asymmetry T = b/a > 1.5 per USP)
Symptom: The baseline rises or falls systematically for >5 minutes
Symptom: The expected analyte peak does not appear on the chromatogram
Symptom: Pump pressure > 80% of the column max or system shutdown with a high-pressure error
Symptom: Unexplained peaks on the chromatogram absent from the calibration
56-86-0
— multi-criteria ranking (W12): 30% citations · 20% recency · 20% topic · 15% historical · 15% open access.
Kwas L-glutaminowy, CAS 56-86-0
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