| Test item | Specification | Result |
| Appearance | White powder | White powder |
| Assay w/% | ≥98.0 | 99.11 |
| Water Insoluble w/% | ≤0.15 | 0.11 |
| Loss on drying | ≤9.5 | 8.52 |
| Heavy metals(Pb) w/% | ≤0.002 | <0.002 |
| Free acid( CH3COOH) w/% | <0.11 | <0.11 |
| Arsenic w/% | ≤0.0002 | <0.0002 |
| Lead(Pb) | ≤0.002 | <0.002 |
| Free alkali(NaOH）w/% | <0.06 | <0.06 |
| Conclusion | Qualified | |