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fluorescent brightener, Ultraviolet absorbers, Dyestuffs, Optical Brightener, cosmetics, Manufacturer and Supplier - China(CN)
Ultraviolet absorbers Benzophenone-4 (CAS NO.:4065-45-6)
Molecular Formula£ºC14H12O6S
Molecular Weight£º308.31
CAS No.£º4065-45-6
Appearance£ºWhite or light yellow crystalline powder
Assay £º99.0% min.
Heavy metals£º5ppm max.
Colour (Gardner-10% aqueous solution)£º1.0 max.
Loss on drying £ºa.5.0% max b. 3.0% max
PH value£º1.2-2.2
UV Absorbance Max at 285nm£º460 min.
UV Absorbance Max at 325nm £º290 min.
Melting Point £º140 degree centigrade min.
Turbidity in water (EBC)£º1.5 max
Package£ºPacked in 25kgs fiber drum with double PE liners, or according to customers' request.
