Item | Specifications |
Appearance | White crystals or crystalline powder |
Active content: | Min. 98% |
Assay, % | 98.5~101.5 |
Identification | Infrared absorption |
Specific optical rotation | +22.4~+24.7° |
pH value | 5.6~6.1 |
Loss on drying,% | ≤0.30 |
Residue on ignition,% | ≤0.4 |
Chloride, % | ≤0.05 |
Sulphate(SO4 | ≤0.03 |
Iron ,% | ≤0.003 |
Heavy metals ,% | ≤0.0015 |