| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | White or off-white crystals powder | Conforms |
| Melting point | 50.0~54.0℃ | 51.2~53.1℃ |
| Loss on drying | ≤0.50% | 0.20% |
| Residue on ignition | ≤0.2% | 0.06% |
| Single impurity | ≤0.5% | 0.12% |
| Purity (on dry base) | ≥99.5% | 99.69% |
| Conclusion: The Product Conforms to Enterprise Standard. |
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