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2,3,4-TRIHYDROXYBENZOPHENONE |
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usage for Positive light-sensitive NAC-Ester etc. 3-THBP, |
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1143-72-2 |
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BP-20 is a UV absorber of the hydroxyphenyl Benzophenone class which imparts outstanding light stability to paintings and suntan oil, especially suitable for cosmetic additives, also could absorb UVA, VB , PAC Positive light-sensitive NAC-Ester etc. |
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Appearance: Yellow to light yellow crystalline powder Purity: 99.0% min Melting point: 136.0-140.0 ¡ÆC Moisture: 0.5% max Fe: 100ppm max Na, K, Ca: 100ppm max
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