| 1 | Description | Colourless, light crystals | Colourless, light crystals, scales or needles. | IP |
| 2 | Solubility | Complies | Freely soluble in ethanol(95%), in chloroform and in ether; slightly soluble in water but soluble in boiling water, it soluble in fixed oil. | IP |
| 3 | Identification(By Melting point) | 123°C | 121°C-124°C | IP |
| 4 | Identification (By benzoates) | Complies | A dull-yellow precipitate, soluble in ether should form. | IP |
| 5 | Appearance of solution | Complies | Clear and colourless solution. | IP |
| 6 | Arsenic (As) | Less than 2ppm | NMT 2ppm | IP |
| 7 | Readily oxidizable substances | 0.2ml of 0.1M potassium permanganate required | Not more than 0.5ml of 0.1M potassium permanganate should be required. | IP |
| 8 | Readily carbonizable substances | Complies | The colour of the solution should not be more intense than that of reference solutionYS5. | IP |
| 9 | Cinnamic acid | Complies | No odour of benzaldehyde should develop. | IP |
| 10 | Chlorinated compounds | Complies | Any opalescence produced in the sample solution should not more intense than standard. | IP |
| 11 | Heavy metals | Less than 10ppm | NMT 10ppm | IP |
| 12 | Sulphated ash | 0.07% | NMT 0.1% | IP |
| 13 | Water | 0.47% | NMT 0.7% | IP |
| 14 | Assay | 99.82% | 99.5% - 100.5% on anhydrous basis. | IP |