Synonyms: UV-531, benzophenone -12 Molecular type: C21 H 26 O 3 Molecular Weight: 326.43CAS No.: 1843-05-6 Appearance:Light yellow ... high-performance anti-aging additive can absorb 240-340 nanometer UV light,with light color,non-toxic,good compatibility,mobility,easy processing characteristics ... ,powder coating,polyurethane,rubber etc.,to provide them with good light stability effect.