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CAS No. : 56-41-7
Molecular formular: C3H7NO2
Molecular weight: 89.09
L-Alanine | AJI92 | USP40 | EP6.0 |
Description | White crystals or crystalline powder | / | White or almost white,crystalline powder or colourless crystals |
Solubility | / | / | Freely soluble in water,very slightly soluble in alcohol. |
Identification | Conforms | Conforms | Conforms |
Appearance of solution | / | / | Clarity of solution:5% water solution should be clear |
Colour of solution:5% water solution should be not more intensively coloured than reference solution BY6 | |||
Assay | 99.0%～101.0% | 98.5%～101.5% | 98.5%～101.5% |
pH | 5.7~6.7 | 5.5～7.0 | / |
Transmittance | ≥98.0% | / | / |
Loss on drying | ≤0.20% | ≤0.2% | ≤0.5% |
Residue on ignition | ≤0.10% | ≤0. 15% | ≤0.1% |
Chloride | ≤0.020% | ≤0.05% | ≤200ppm |
Heavy Metals | ≤10ppm | ≤15ppm | ≤10ppm |
Iron | ≤10ppm | ≤0.003% | ≤10ppm |
Sulfate | ≤0.020% | ≤0.03% | ≤300ppm |
Arsenic | ≤1ppm | / | / |
Ammonium | ≤0.02% | / | ≤200ppm |
Other amino acids | Conforms | Conforms | / |
Pyrogen | Conforms | / | / |
Specific Rotation | +14.3°~+15.2° | ﹢13.7°～﹢15.1° | +13.5°～+15.5° |
Manufacturing
