1 | Description | White, crystalline powder, slightly hygroscopic. | White or almost white, crystalline or granular powder or flakes, slightly hygroscopic. |
2 | Solubility | Passes | freely soluble in water, sparingly soluble in alcohol (90% v/v) |
3 | Identification A (Reaction (b) for Benzoate ) | Complies | A white sublimate should deposited on the inner wall of the tube. |
4 | Identification A (Reaction (c) for Benzoate ) | Complies | Melting point should be 120°C to 124°C after crystallization |
5 | Identification B (By Chemical test) | Complies | A dense white precipitate should form |
6 | Appearance of solution | Passes | Solution should be clear and not more intensley coloured than reference solution Y6. |
7 | Acidity or Alkalinity | Complies | Not more than 0.2 ml of 0.1 M sodium hydroxide or 0.1 M hydrochloric acid should require to change the colour of the indicator. |
8 | Halogenated compounds: Ionized chlorine | Less than 200 ppm | 200 ppm max. |
9 | Halogenated compounds: Total chlorine | Less than 300 ppm | 300 ppm max. |
10 | Loss on drying | 0.97% | 2.0% max. |
11 | Assay (on dried basis) | 99.8% | 99.0% - 100.5% |