Items |
Standard |
Characteristics |
A white or almost white crystalline powder |
Solubility |
Sparingly soluble in water, freely soluble in alcohol,very slightly soluble in ether and in methylene chloride |
Identification |
Conforms |
Melting range |
168-172℃ |
Chloride |
≤0.014% |
Sulphate |
≤0.02% |
Sulfide |
No coloration or spotting occurs |
Readily Carbonisable Substance |
Conforms |
FreeP-aminophenol |
≤0.005% |
Related substance |
Conforms |
Loss on drying |
≤0.5% |
Residue on ignition |
≤0.1% |
OVI |
Meets the requirements |
Assay |
99.0-101.0% |
Heavy metals |
≤0.001% |
Items |
Standard |
Characteristics |
A white or almost white crystalline powder |
Solubility |
Sparingly soluble in water, freely soluble in alcohol,very slightly soluble in ether and in methylene chloride |
Identification |
Conforms |
Melting range |
168-172℃ |
Chloride |
≤0.014% |
Sulphate |
≤0.02% |
Sulfide |
No coloration or spotting occurs |
Readily Carbonisable Substance |
Conforms |
FreeP-aminophenol |
≤0.005% |
Related substance |
Conforms |
Loss on drying |
≤0.5% |
Residue on ignition |
≤0.1% |
OVI |
Meets the requirements |
Assay |
99.0-101.0% |
Heavy metals |
≤0.001% |