| TESTING ITEMS | SPECIFICATION | RESULTS |
| Appearance | White or off-white crystalline powder | Conforms |
| Identification | Meet the requirement | Conforms |
| Melting piont | 128℃~132℃ | 130℃ |
| PH | 4.5~5.6 | 5.4 |
| Loss on drying | ≤0.5% | 0.26% |
| Residue on ignition | ≤0.1% | 0.04% |
| Heavy metals | ≤10ppm | <10ppm |
| Assay | 99.0%~ 101.0% | 99.50% |
| Conclusion: The Product Conforms to CP/USP/BP. |
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