| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | White crystalline powder | Conforms |
| Identification | Meet the requirement | Conforms |
| Melting point | 101℃~103℃ | 102℃ |
| Sulfate ash | ≤0.02% | 0.013% |
| Loss on drying | ≤7.0% | 5.6% |
| Residue on ignition | ≤0.1% | 0.02% |
| Heavy metals | ≤0.001% | 0.0001% |
| Chloride | ≤0.004% | 0.003% |
| Assay | ≥99.0% | 99.80% |
| Conclusion: The Product Conforms to CP/USP. |
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