White crystals or crystalline powder; Freely soluble in water.Used in food additive and nutritional aggrandizement.Used in the curing of hepatic coma, the preparation of amino acid transfusion; or used in the injection of liver disease.
Item | Specifications (USP) | Specifications (AJI) |
Description | White crystals or crystalline powder | White crystals or crystalline powder |
Identification | Infrared absorption spectrum | Infrared absorption spectrum |
Specific rotation[a]D20° | +26.3 °- +27.7° | +26.9 °- +27.9° |
State of solution/Transmittance | --- | ≤98.0% |
Chloride (Cl) | ≤ 0.05% | ≤0.020% |
Ammonium (NH4) | --- | ≤0.02% |
Sulfate (SO4) | ≤0.03% | ≤ 0.020% |
Iron (Fe) | ≤0.003% | ≤ 10PPm |
Heavy metals (Pb) | ≤0.0015% | ≤10PPm |
Arsenic (As2O3) | --- | ≤1PPm |
Other amino acids | --- | Chromatographically not detectable |
Loss on drying | ≤0.5% | ≤ 0.5% |
Residue on ignition(sulfated) | ≤0.3% | ≤0.10% |
Assay | 98.5-101.5% | 99.0-101.0% |
PH | --- | 10.5-12.0 |
Organic volatile impurities | Meets the requirements | --- |