Descrição
| Items | Specification |
| Appearance | White powder |
| Assay | 99.0-100.5% |
| Alkalinity and Acidity | Pass |
| Appearance of solution | Pass |
| Chloride | ≤0.02% |
| Total chloride | ≤0.03% |
| Arsenic(As) | ≤0.0003% |
| Heavy matals(As Pb) | ≤0.001% |
| Loss on drying | ≤2.0% |
