1 | Description | Colourless, light crystals. | Colourless, light crystals, scales or needles. |
2 | Solubility | Passes | 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) | 0.82 | 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) | 123°C | 121° C - 123°C |
7 | Appearance of solution | Passes | Clear and colourless solution. |
8 | Arsenic (As) | Less than 2ppm | NMT 2ppm |
9 | Heavy metals | Less than 10ppm | NMT 10ppm |
10 | Readily oxidizable substances | 0.4ml of 0.1M potassium permanganate | Not more than 0.5ml of 0.1M potassium permanganate should be require. |
11 | Readily carbonizable substances | Passes | The colour of the solution should not be more intense than that of reference solutionYS5. |
12 | Cinnamic acid | Passes | No odour of benzaldehyde should develop. |
13 | Chlorinated compounds | Passes | Any opalescence produced in the sample solution should not more intense than standard. |
14 | Sulphated ash | 0.03% | NMT 0.1% |
15 | Water | 0.3% | NMT 0.7% |
16 | Assay | 99.9% | 99.5% - 100.5% on anhydrous basis. |