| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | White or light yellow flaky crystals | Conforms |
| Melting point | 129℃~132℃ | 130℃ |
| Loss on drying | ≤0.5% | 0.02% |
| Residue on ignition | ≤0.1% | 0.08% |
| Assay | ≥99.0% | 99.50% |
| Conclusion: The Product Conforms to Enterprise Standard. |
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