| TESTING ITEMS | SPECIFICATION | RESULTS |
| Description | Yellow or orange yellow crystalline powder | Conforms |
| UV ray absorption | A256/A365=2.80~3.00 | 2.90 |
| Organic volatile substances | Meets the requirements | Conforms |
| Water | ≤8.5% | 7.85% |
| Ignition residue | ≤0.3% | 0.20% |
| Sulfate ash | ≤0.2% | 0.18% |
| Assay | 97.0%~102.0% | 97.5% |
| Conclusion: The Product Conforms to USP. |
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