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CAS No.: 56-86-0
Molecular formular: C5H9NO4
Molecular weight: 147.13
L-Glutamic acid | AJI97 | EP6.0 |
Description | White crystals or crystalline powder | A white or almost white, crystalline powder or colourless crystals. |
Solubility | / | Freely soluble in boiling water, slightly soluble in cold water, practically insoluble in acetic acid, in acetone and in alcohol |
Identification | Conform | Conforms |
Appearance of solution | / | Clarity of solution:10% water solution should be clear |
Colour of solution:10% water solution should be colourless | ||
Assay | 98.5%~100.5% | 98.5~100.5% |
pH | 3.0~3.5 | / |
Transmittance | ≥98.0% | / |
Loss on drying | ≤0.10% | ≤0.5% |
Residue on ignition | ≤0.10% | ≤0.1% |
Chloride | ≤0.020% | ≤200ppm |
Heavy Metals | ≤10ppm | ≤10ppm |
Iron | ≤10ppm | ≤10ppm |
Sulfate | ≤0.020% | ≤300ppm |
Arsenic | ≤1ppm | / |
Ammonium | ≤0.02% | ≤200ppm |
Other amino acids | Conforms | / |
Pyrogen | Conforms | / |
Ninhydrin-positive substances (TLC) | / | Conforms |
Specific Rotation | +31.5°~ +32.4° | +30.5° to +32.5° |
Manufacturing
