UV-328 CAS NO.: 25973-55-1 Chemical name:2-(2H-hydroxy-3-5-Di-tert-Amyllphenyl)benzotriazole Molecular formula: C22H29N3O Molecular weight：351.5 Structural Formula: Specification: Appearance：slightly yellow crystalline powder Assay(GC)：99.0%min Melting range：78-82℃ Volatile：0.2%max Ash：0.1%max Light transmittance：…