| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | Colorless or white crystalline powder | Conforms |
| Melting point | 75.0℃~77.0℃ | 76.2℃ |
| Sulfate(SO4) | ≤0.024% | <0.024% |
| Free acid (PBHA) | ≤0.55% | <0.55% |
| Residue on ignition | ≤0.10% | <0.10% |
| Heavy metals(Pb) | ≤10ppm | <10ppm |
| Arsenic (As2O3) | ≤4ppm | <4ppm |
| Loss on drying | ≤0.5% | 0.22% |
| Assay | ≥99.0% | 99.20% |
| Conclusion: The Product Conforms to Enterprise Standard. |
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