| White crystalline flake or powder | 99.5% |
| Item | Specification | Results |
| Appearance | White crystale | White crystale |
| Assay, % | ≥99.5% | 99.57% |
| OPP content（HPLC） | ≤1000ppm | 600ppm |
| Melting point | 117-120℃ | 118.5-118.6℃ |
| water absorption rate | ≤0.3 | 0.02 |
| Acid value | ≤300 | 270.1 |
| Colority of melt（A） | ≤100 | 80 |
| Conclusion | Qualified | |
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