| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | White, crystalline powder or white or almost white crystals, slightly hydroscopic | Conforms |
| Appearance of solution | B5 | Conforms |
| Identification | Positive | Positive |
| Melting point | 120℃~124℃ | 123℃ |
| PH | 6.5~8.5 | 7.6 |
| Loss on drying | 16.0%~17.5% | 16.5% |
| Heavy metals | ≤10ppm | 2ppm |
| Related substances | Impurity A: ≤0.1% | 0.02% |
| Any other impurity: ≤0.1% | 0.07% | |
| Total impurities: ≤1.0% | 0.09% | |
| Assay | 99.0%~101.0% | 99.50% |
| Conclusion: The Product Conforms to USP/EP. |
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