| Tests | Specification | Results | |
| Characteristics | An almost white or tiny yellow powder | Almost white | |
| Identification | Positive reaction | Positive reaction | |
| Melting point | 138-141℃ | 139.3-139.7℃ | |
| 2-methyl-5-nitroimidazole | ≤0.5% | Pass | |
| Loss on drying | 1% | 0.21% | |
| Sulphated ash | 0.1% | 0.04% | |
| Assay(on the dried basis) | 98%-101% | 99.29% | |
| Conclusion: Complies with requirement of B.P.V.2013 standards. | |||