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2,2',4,4'-tetrahydroxy Benzophenone,Benzophenone-2(BP-2)
CAS:131-55-5
2,2',4,4'-tetrahydroxy Benzophenone,Benzophenone-2(BP-2) Appearance:Pale greenish yellow crystalline powder. Assay(HPLC):≥99.0% Solubility:transparent without insoluble substance Melting point:195.0°C~203.0°C Specific Extinction(1%,1cm) E345:≥580 Loss on drying:≤0.5% Gardner color:≤3.0 Heavy metals:≤5 ppm Turbidity:≤12NTU