1 | Description | Colorless to light pink interlaced, crystalline mass. has a characteristic odor Gradually darkens on exposure to light and air. | Colorless to light pink, interlaced or separate, needle-shaped crystals or white to light pink, crystalline mass. has a characteristic odor Gradually darkens on exposure to light and air. |
2 | Solubility | Passes | Soluble in water, very soluble in alcohol, in glycerin, in chloroform in ether, and in fixed and volatile oils; sparingly soluble in mineral oil. |
3 | Identification A (By chemical test) | Complies | A white precipitate should form which should dissolve at first but become permanent as more of the reagent add |
4 | Identification B (By Chemical test) | Complies | A violet color should produce. |
5 | Assay (on Anhydrous basis) | 99.80% | 99.00%-100.50% |
6 | Limit of Non volatile residue | 0.02% | Not more than 0.05% |
7 | Clarity of solution and reaction | Passes | A solution is clear and is neutral or acid to litmus paper. |
8 | Congealing temperature | 40°C | Not lower than 39°C |
9 | Water | 0.18% | Not more than 0.5% |