| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | Off-white crystalline powder | Conforms |
| Identification | The infrared absorption spectrum of test sample should exhibit maxima only at the same wave numbers as that of a similar preparation of THP standard. | Conforms |
| Water | ≤0.5% | 0.21% |
| Melting point | ≥174℃ | 178.2℃ |
| Purity | ≥98.5% | 99.94% |
| Conclusion: The Product Conforms to Enterprise Standard. |
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