| S.No | Test | Specification |
| 1. | Description | A white to off-white colour powder and hygroscopic in nature |
| 2. | Solublity | Soluble in methanol and water. Insoluble in dichloro-methane and benzene |
| 3. | Identification by IR | The sample and standard IR spectra are concordant |
| 4. | Melting range | Between 157°C and 163°C |
| 5. | Loss on drying | Not more than 2.0% |
| 6. | Sulphated ash | Not more than 1% |
| 7. | Moisture content | Not more than 0.5% |
| 8. | related impurities by HPLC | |
| 1. single impurity | Not more than 0.5% | |
| 2. total impurities | Not more than 1.0% | |
| 9. | Assay by Chemical on dry basis | Not less than 98.0% and not more than 102.0% |