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| L-Alanine (L-Alanine) is a naturally occurring amino acid with the chemical formula C₃H₇NO₂, a molecular weight of 89.09 and a melting point of 297°C. It is a polar amino acid. Its structure contains an amino group and a carboxyl group and is a polar amino acid. Physical Properties L-Alanine is a colourless to white crystalline powder with a density of 1.432 g/cm³, soluble in water and ethanol, insoluble in ether and acetone. | |||||||||
56-41-7
bosschemical
56-41-7
| L-Alanine Basic information | |
| Description References | |
| Product Name: | L-Alanine |
| CAS: | 56-41-7 |
| MF: | C3H7NO2 |
| MW: | 89.09 |
| EINECS: | 200-273-8 |
| Mol File: | 56-41-7.mol |
| L-Alanine Structure | |
| L-Alanine Chemical Properties | |
| Melting point | 314.5 °C |
| alpha | 14.5 º (c=10,6N HCl,dry sub.) |
| Boiling point | 212.9±23.0 °C(Predicted) |
| density | 1,432 g/cm3 |
| FEMA | 3818 | DL-ALANINE |
| refractive index | 1.4650 (estimate) |
| storage temp. | 2-8°C |
| solubility | H2O: 100 mg/mL |
| pka | 2.34(at 25℃) |
| form | powder |
| color | White to almost white |
| PH | 5.5-6.5 (100g/l, H2O, 20℃) |
| optical activity | [α]20/D +14.0±1°, c = 5% in 5 M HCl |
| Water Solubility | 166.5 g/L (25 ºC) |
| λmax | λ: 260 nm Amax: ≤0.03 |
| λ: 280 nm Amax: ≤0.02 | |
| Merck | 14,204 |
| Item | USP24 | FCC4 | industrial grade |
| Assay | 98.5~101.5% | 98~100.0% | ≥98% |
| pH | 5.5~7.0 | 5.5~7.0 | 5.7~6.7 |
| Specific rotation[a]D020 | +14.3°~+15.2° | +14.3°~+15.2° | |
| [a]D025 | +13.5°~+15.5° | ||
| Chloride(Cl) | ≤0.05% | ||
| Sulfate(SO4) | ≤0.03% | ||
| Iron(Fe) | ≤30ppm | ||
| Heavy metals(Pb) | ≤15ppm | ≤15ppm | ≤30ppm |
| Loss on drying | ≤0.20% | ≤0.20% | ≤0.50% |
| Residue on ignition | ≤0.15% | ≤0.15% | |
| Organic volatile impurities | meets the requirements |
