white or almost white, crystalline powder.

Solubility : practically insoluble in water, soluble in acetone,

sparingly soluble in ethanol (96 per cent).

Limits:

– impurity C: maximum 0.3 per cent;

– impurity A at 385 nm: maximum 0.10 per cent;

– unspecified impurities: for each impurity, maximum

0.10 per cent;

– total: maximum 0.5 per cent;

– reporting threshold: 0.05 per cent