Superiority:
Hangzhou Dingyan Chem is a leading manufacturer and supplier of chemicals in China.We develop,produce and distribute high quality pharmaceuticals, intermediates, special chemicals and other fine chemicals.
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1.Best quality in your requirement
2.Competitive price in China market
3.mature Technical support
4.Professional logistic support
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Details:
Appearance White or almost white crystalline powder
Identification A: IR absorption
B: UV absorption
C: TLC
Melting point 168~172℃
Water 0.5% max
Related substances Impurity J(chloroacetanilide) 10ppm max
Impurity K(4-aminophenol) 50ppm max
Impurity F(4-nitrophenol) 0.05% max
Any other impurities 0.05% max
Total of impurities 0.1% max
Residue on ignition 0.1% max
Chloride 0.014% max
Sulfate 0.02% max
Sulfide Conforms
Heavy metals 0.001% max
Free p-aminophenol 0.005% max
Limit of P-chloroacetanilide 0.001% max
Readily carbonizable substances Conforms
Residual solvents Residue content of acetic acid is limited by the test of loss on drying not more than 0.5%
Assay(anhydrous basis) 99.0~101.0%