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fluorescent brightener, Ultraviolet absorbers, Optical Brightener, Dyestuffs, cosmetics, Manufacture and Supplier - China(CN)
Ultraviolet absorbers Benzophenone-4 (CAS NO.:4065-45-6)
Molecular Formula¡GC14H12O6S
Molecular Weight¡G308.31
CAS No.¡G4065-45-6
Appearance¡GWhite or light yellow crystalline powder
Assay ¡G99.0% min.
Heavy metals¡G5ppm max.
Colour (Gardner-10% aqueous solution)¡G1.0 max.
Loss on drying ¡Ga.5.0% max b. 3.0% max
PH value¡G1.2-2.2
UV Absorbance Max at 285nm¡G460 min.
UV Absorbance Max at 325nm ¡G290 min.
Melting Point ¡G140 degree centigrade min.
Turbidity in water (EBC)¡G1.5 max
Package¡GPacked in 25kgs fiber drum with double PE liners, or according to customers' request.
