1 | Description | Colourless, light crystals, scales | Colourless, light crystals, scales or needles. |
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. |
3 | Identification A (By Chemical test) | Complies | A buff coloured precipitate should produce. |
4 | Identification B (by UV absorbance test) | Complies | Absorbance maxima should be only at 225nm and absorbance at 225 nm should be about 0.8. |
5 | Identification C (By Chemical test) | Complies | Solution should be acidic to methyl red solution |
6 | Identification D (By melting point) | 122.8°C | 121° C - 123°C |
7 | Appearance of solution | Complies | Clear and colourless solution. |
8 | Arsenic (As) | Less than 2ppm | NMT 2ppm |
9 | Heavy metals | Less than 10ppm | NMT 10ppm |
10 | Readily oxidizable substances | Complies | Not more than 0.5ml of 0.1M potassium permanganate should be require. |
11 | Readily carbonizable substances | Complies | The colour of the solution should not be more intense than that of reference solutionYS5. |
12 | Cinnamic acid | Complies | No odour of benzaldehyde should develop. |
13 | Chlorinated compounds | Complies | Any opalescence produced in the sample solution should not more intense than standard. |
14 | Sulphated ash | 0.05% | NMT 0.1% |
15 | Water | 0.4% | NMT 0.7% |
16 | Assay | 99.8% | 99.5% - 100.5% on anhydrous basis. |