| Appearance | Almost white crystalline powder | Conform |
| Identification | The IR absorption spectrum of the samplecorresponds to that of the reference standard | Conform |
| Absorbance | The specific absorbance at the maximum at360nm is 1020 to 1120 | Conform |
| Related substances (%) | Impurity A:≤0.05% | Conform |
| Impurity B:≤ 0.05% | Conform | |
| Unspecified impurities:≤ 0.1% | 0.05 | |
| Total impurities:≤0.2% | 0.14 | |
| Loss on drying (%) | ≤0.5 | 0.18 |
| Sulfated ash (%) | ≤0.1 | 0.06 |
| Assay (%) | 99.0-101.0 | 99.85 |