| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | White or slightly yellowish powder | Conforms |
| Identification | Meet the requirement | Conforms |
| Melting point | 155℃~168℃ | 160℃ |
| Loss on drying | ≤1.5% | 0.7% |
| Residue on ignition | ≤0.1% | 0.03% |
| Limit of alcohol | ≤0.4% | 0.2% |
| Free aromatic amine | ≤0.1% | <0.1% |
| Free iodine | ≤0.002% | <0.002% |
| Heavy metals | ≤0.002% | <0.002% |
| Assay | 98.5%~101.0% | 99.40% |
| Conclusion: The Product Conforms to Enterprise Standard. |
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