Benzophenone-4 BP-4 is a UV absorber and light stabilizer. The UV photolysis of benzophenone groups will produce highly reactive triplet intermediates. It can absorb UVB rays and short-wave UVA rays to help protect the skin from UV damage. It has the advantages of high absorption efficiency, good light and heat stability, and no side effects.
Items | Specification |
Appearance | Off-white light yellow powder |
Specific extinction 1%, 1cm | E285:460-490E325:285-315 |
Purity(HPLC) | ≥99.0% |
Turbidity in water | 4.0 EBC max |
Loss on drying | 3.0% max |
Melting point | ≥140℃ |
Heavy metal | 5ppm max |
Gardner color | 2.0 max |
Items | Specification |
Appearance | Off-white light yellow powder |
Specific extinction 1%, 1cm | E285:460-490E325:285-315 |
Purity(HPLC) | ≥99.0% |
Turbidity in water | 4.0 EBC max |
Loss on drying | 3.0% max |
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