Superiority:
Appearance white or almost white powder
Solubility Very slightly or slightly soluble in water, freely soluble in anhydrous ethanol and in methanol, slightly soluble in acetone
Identification A:IR the infrared absorption spectrum exhibits maximum only at the same wavelengths as that of the standard sample
B: It gives reaction of chlorides
Related substances Impurity B 0.15% max
Impurity E 0.05% max
Any other impurity 0.1% max
Total of impurity 0.3% max
Loss on drying 0.5% max
Sulphated ash 0.1% max
Residual solvents Isopropyl alcohol 5000ppm max
Ethyl acetate 5000ppm max
Chloroform 60ppm
Assay 99.0~101.0%(dried substance)
Details:
Appearance white or almost white powder
Solubility Very slightly or slightly soluble in water, freely soluble in anhydrous ethanol and in methanol, slightly soluble in acetone
Identification A:IR the infrared absorption spectrum exhibits maximum only at the same wavelengths as that of the standard sample
B: It gives reaction of chlorides
Related substances Impurity B 0.15% max
Impurity E 0.05% max
Any other impurity 0.1% max
Total of impurity 0.3% max
Loss on drying 0.5% max
Sulphated ash 0.1% max
Residual solvents Isopropyl alcohol 5000ppm max
Ethyl acetate 5000ppm max
Chloroform 60ppm
Assay 99.0~101.0%(dried substance)