Characteristics:~A white crystalline powder
Solubility:~Sparingly soluble in water, freely
soluble in alcohol, very slightly soluble
in ether and in methylene chloride
Melting
range:**9.0~**0.0℃,Chloride:<0.**4%,Sulph:<0.*2%,FreeP—aminophenol:<0.**5%,Loss
on drying:Not more than 0.5%,Residue on ignition:Not more than
0.1%,Assay:*9.0~**1.0%,Heavy metals:Not more than 0.**1%
