Superiority:
Appearance White fine crystalline powder
Identification IR,UV conform
Solubility Very slightly soluble in water, in acetone, in chloroform, and in alcohol; soluble in methanol. Melts at about 142℃,with decomposition
Loss on drying 0.5% max
Residue on ignition 0.2% max
Iron 0.005% max
Heavy metals 0.001% max
Related substance Total impurities 1.0% max
Individual impurity 0.5% max
E-isomer 0.3% max
Residual solvents 0.5% max
Acetone 0.5% max
Assay 99.0~101.0%
Conclusion Conform with USP32
Details:
Appearance White fine crystalline powder
Identification IR,UV conform
Solubility Very slightly soluble in water, in acetone, in chloroform, and in alcohol; soluble in methanol. Melts at about 142℃,with decomposition
Loss on drying 0.5% max
Residue on ignition 0.2% max
Iron 0.005% max
Heavy metals 0.001% max
Related substance Total impurities 1.0% max
Individual impurity 0.5% max
E-isomer 0.3% max
Residual solvents 0.5% max
Acetone 0.5% max
Assay 99.0~101.0%
Conclusion Conform with USP32