| Items | Standards |
| Appearance | Yellow Or Orange Crystalline Powder Almost Odouless |
| Ultraviolet Abaorption A256/A365 | Between 2.80 And 3.00 |
| Water | ≤ 8.50% |
| Residue Ou Ignition | ≤0.3% |
| Chromatographic Purity | Not Greater Than 2.0% |
| Organic Volatile Impruities | Meet The Require |
| Assay | 97.0-102.0% |
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