Specifications:
Appearance:White to light yellow crystal powder
Purity ( on dry base):99% min HPLC
Melting point ( on dry base):117.0-121.0deg.C
Loss on drying:0.5% max
Residue on ignition( on dry base):1.0% max
Iron:40ppm max
Content of resorcinol :1.0% max
The absorbance:0.150 max