| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | Colorless crystals or white crystalline powder | Conforms |
| Melting point | 84.0℃~86.0℃ | 85.0℃ |
| Sulfate(SO4) | ≤0.024% | <0.024% |
| Free acid(PHBA) | ≤0.55% | <0.55% |
| Heavy metals(Pb) | ≤10ppm | <10ppm |
| Arsenic (As2O3) | ≤4ppm | <4ppm |
| Loss on drying | ≤0.5% | 0.24% |
| Residue on ignition | ≤0.1% | 0.02% |
| Assay | ≥99.0% | 99.60% |
| Conclusion: The Product Conforms to Enterprise Standard. |
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