2,2',4,4'-Tetrahydroxybenzophenone 99.0% UV absorber cosmetic
Appearance:Pale greenish yellow crystalline powder.
Assay(HPLC):≥99.0%
Solubility:transparent without insoluble substance
Melting point:195.0℃~203.0℃
Specific Extinction(1%,1cm)E345: ≥580
Loss on drying:≤0.5%
Gardner color:≤3.0
Heavy metals:≤5 ppm
Turbidity:≤12NTU
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