| S.No. |
Particulars |
Standard Limits |
| 1 |
Description |
Creamish white to cream coloured powder |
| 2 |
Solubility |
Sparingly soluble in water, soluble in
aqueous solution of alkali, 5 % w/v
solution in dimethyl formamide
should be clear |
| 3 |
Melting Point |
Between 248°C to 254°C |
| 4 |
Loss on drying |
Not more than 0.5 % w/w |
| 5 |
Sulphated Ash |
Not more than 0.1 % w/w |
| 6 |
Salt content (as NH4SO4 ) |
Not more than 0.5 % w/w |
| 7 |
Related substance (By TLC) |
4,(5) Nitro imidazole -Not more than 1.0 % w/w |
| 8 |
Assay |
Not less than 99.0% w/w and not more
than100.5 % w/w of C4H5N3O2,
calculated with reference to the dried
substance |
