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2,2',4,4'-Tetrahydroxybenzophenone |
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BP-2, Uvinul D 50, benzophenone-2 |
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131-55-5 |
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BP-2 is a UV absorber of the hydroxyphenyl benzophenone class which imparts outstanding light stability to plastics and other paintings, especially suited for Sunscreen in Cosmetics etc.
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Appearance: Light yellow crystalline powder Purity: 99.0% min Melting point: 195.0 ¡ÆC min Water content: 0.5% max Vcs Color: 4.0 NTU max (10g/L in methanol by Gardner) K.value: 58.0 min Transmittance 400nm: 2.0% min. 440nm: 88.0% min.
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