Analytical Items | Standard |
Appearance | White crystalline powder |
Identification | Meet the requirements |
Assay | 98.5%~101.0% |
pH | 5.0 ~ 7.0 |
Specific rotation | +24.5°~+26.8° |
Transmittance | ≥98.0% |
Loss on drying | ≤ 0.3 % |
Residue on ignition | ≤ 0.1% |
Chloride (as Cl) | ≤ 0.02 % |
Sulphate (as SO 4 ) | ≤ 0.02 % |
Iron (as Fe) | ≤ 0.001 % |
Ammonium (as NH 4 ) | ≤ 0.02 % |
Heavy Metals (as Pb) | ≤ 0.001 % |
Arsenic | ≤ 0.0001 % |