| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | Beige to gray-brown crystalline powder | Confirms |
| Iron | ≤0.02% | 0.01% |
| Moisture | ≤0.3% | 0.16% |
| N-ethyl phthalimide | ≤0.5% | 0.38% |
| 4-Nitro-N-ethyl phthalimide | ≤0.1% | 0.06% |
| Other total impurities | ≤2.5% | 1.43% |
| Insoluble matter | ≤0.1% | 0.07% |
| Purity | ≥97.5% | 98.20% |
| Conclusion: The Product Conforms to Enterprise Standard. |
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