Item | Standard |
Appearance | White crystals or crystalline powder |
Specific rotation[α]20/D (C=10,2mol/L HCL) | +25.2 to +25.8° |
State of solution (Transmittance) | clear and colorless Not less than 98.0% |
Chloride (Cl) | 19.11 to 19.50% |
Ammonium (NH4) | Not more than 0.02% |
Sulfate (SO4) | Not more than 0.020% |
Iron (Fe) | Not more than 10ppm |
Heavy metal(Pb) | Not more than 10ppm |
Arsenic (As2O3) | Not more than 1ppm |
Other amino acids | Chromatographically Not detectable |
Loss on drying | Not more than 0.50% |
Residue on ignition(sulfated) | Not more than 0.10% |
Assay | 99.0% to101.0% |
pH | 1.0 to
2.0 |
