Items
Specifications
Results
Appearance
White or almost white powder
Almost white powder
Solubility
Very slightly soluble in acetone and methylene trichloride ,practically insoluble in ethanol, insoluble in water freely soluble in glacial acetic acid
Conforms
Identification
Positive
Molysite
≤0.003%
Loss on drying
≤0.5%
0.1%
Melting point
206-212
207-209
Residue on ignition
≤0.2%
Related substances
≤1.0%
Assay
98.0% ~102%
99.2%
Absorption coefficient
430 ~ 458
445
Conclusion
The product conforms to the CPV2015
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