1 | Appearance | White crystalline powder. | White or almost white, crystalline powder or colourless crystals. |
2 | Solubility | Passes | Slightly soluble in water, soluble in boiling water, freely soluble in ethanol (96%) and in fatty oils. |
3 | Identification A (By Melting point) | 122.9°C | 121°C to 124°C |
4 | Identification B (By Chemical test) | Complies | Solution S gives reaction of benzoates |
5 | Appearance of solution | Passes | Solution S is clear and colourless. |
6 | Carbonisable substances | Passes | The solution is not more intensely coloured than reference solution Y5. |
7 | Oxidisable substances | Passes | The solution is still coloured pink. |
8 | Halogenated compounds and halides | Less than 300ppm | NMT 300ppm |
9 | Heavy metals | Less than 10ppm | NMT 10ppm |
10 | Sulphated ash | 0.04% | NMT 0.1% |
11 | Assay | 99.74% | 99.0% - 100.5% |