Molecular Formula: C3H7NO2
Molecular Weight: 89.09
CAS No： 56-41-7
| L-Alanine | CP2020 | EP11 | EP8 | USP2023 |
| Assay | ≥98.5% | 98.5～101.0 % | 98.5～101.0 % | 98.5-101.5% |
| PH | 5.5-7.0 | / | / | 5.5-7.0 |
| Specific rotation[a]D20 | +14.0°-+15.0° | +13.5°-+15.5° | +13.5°-+15.5° | +13.7°-+15.1° |
| Specific rotation[a]D25 | / | / | / | / |
| Transmittance(T430) | ≥98.0% | / | / | / |
| Appearance of solution | / | clear & colorless ≤BY6 | / | / |
| Chloride(Cl) | ≤0.02% | ≤0.02% | ≤0.02% | ≤0.05% |
| Ammonium(NH4) | ≤0.02% | ≤0.02% | ≤0.02% | / |
| Sulfate(SO4) | ≤0.02% | ≤0.03% | ≤0.03% | ≤0.03% |
| Iron(Fe) | ≤10PPM | ≤10PPM | ≤10PPM | ≤30PPM |
| Heavy metals(Pb) | ≤10PPM | / | ≤10PPM | / |
| Arsenic | ≤1PPM | / | / | / |
| Other amino acids | ≤0.5% | / | / | Maleic acid ≤ 0.05% Malic acid ≤ 0.05% Fumaric acid ≤ 0.05% Any unspecified impurity ≤ 0.05% Total impurities≤ 0.20% |
| Ninhydrin-positive substances | / | Each impurity≤ 0.1 % Total impurities≤ 0.5 % | / | / |
| Loss on drying | ≤0.20% | ≤0.50% | ≤0.50% | ≤0.20% |
| Residue on ignition | ≤0.10% | ≤0.10% | ≤0.10% | ≤0.15% |
| Total plate count | ≤ 1000 CFU/g | ≤ 1000 CFU/g | ≤ 1000 CFU/g | ≤ 1000 CFU/g |
| Moulds & Yeasts | ≤ 100 CFU/g | ≤ 100 CFU/g | ≤ 100 CFU/g | ≤ 100 CFU/g |
| L-Alanine | USP32 | AJI92 |
| Assay | 98.5-101.5% | 99.0-101.0% |
| PH | 5.5-7.0 | 5.7-6.7 |
| Specific rotation[a]D20 | +13.7°-+15.1° | +14.3°-+15.2° |
| Specific rotation[a]D25 | / | / |
| Transmittance(T430) | / | ≥98.0% |
| Appearance of solution | / | / |
| Chloride(Cl) | ≤0.05% | ≤0.02% |
| Ammonium(NH4) | / | ≤0.02% |
| Sulfate(SO4) | ≤0.03% | ≤0.02% |
| Iron(Fe) | ≤30PPM | ≤10PPM |
| Heavy metals(Pb) | ≤15PPM | ≤10PPM |
| Arsenic | / | ≤1PPM |
| Other amino acids | Individual impurities≤0.5% Total impurities≤2.0% | conform |
| Ninhydrin-positive substances | / | / |
| Loss on drying | ≤0.20% | ≤0.20% |
| Residue on ignition | ≤0.15% | ≤0.10% |
| Total plate count | ≤ 1000 CFU/g | ≤ 1000 CFU/g |
| Moulds & Yeasts | ≤ 100 CFU/g | ≤ 100 CFU/g |
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