ITEM | SPECIFICATION |
Appearance | White crystals or crystalline powder |
Assay | 98.5%~101.0% |
State of solution | ≥95.0% |
Specific rotation | -74.0°~ -77.0° |
pH | 5.0-6.5 |
Chloride (CL) | ≤0.020% |
Sulfate(SO4) | ≤0.020% |
Ammonium(NH4) | ≤0.020% |
Heavy Metals(Pb) | ≤10ppm |
Iron(Fe) | ≤10ppm |
Arsenic(AS2O3) | ≤1ppm |
Other amino acids | conforms |
Loss on drying | ≤0.20% |
Residue on ignition | ≤0.10% |