| ITEM | STANDARD | RESULTS |
| Appearance | White, crystalline powder or colorless crystals | Passes |
| Identification | Accord With BP2007 | Passes |
| Assay | 98.5%~101.0% | 99.97% |
| Melting point | 75°C~78°C | 77°C |
| Optical rotation | -0.05°~+0.05° | 0.00° |
| Heavy metals | ≤ 0.001% | <0.001% |
| Related substances | ||
| Impurity B | ≤ 0.3% | Passes |
| Any other impurity | ≤ 0.3% | Passes |
| Total of all impurities apart from impurity B | ≤ 0.7% | Passes |
| Impurity F | ≤ 0.1% | Not detected |
| Sulphated ash | ≤ 0.1% | 0.02% |
| Appearance of solution | Accord With BP2007 | Passes |
| Conclusion | COMPLY WITH BP2007 | |
