2-(2H-Benzotriazol-2-yl)-4,6-ditertpentylphenol CAS NO.25973-55-1

ULTRAVIOLET RADIATON ABSORBENT UV-328Chemical Name: 2-（2'-Hydroxy-3',5'-di-tert-pentylphenyl）benzotriazoies Molecular formula C22H29N3O Molecular We…

ULTRAVIOLET RADIATON ABSORBENT UV-328Chemical Name: 2-（2'-Hydroxy-3',5'-di-tert-pentylphenyl）benzotriazoies Molecular formula C22H29N3O Molecular Weight 351.5 CAS# 25973-55-1 Introduction: This product is an ultraviolet light belonging to the benzotriazole class UVAs. It may absorb UV between 270 nm to 380 nm, max345nm.Physical Properties: Appearance: Slightly yellow powder Assay: ≥99%Melting Range: ≥80℃ Ash: ≤0.1%Light Transmittance: 460nm≥97%500nm≥98% Volatiles: ≤0. 3%Solubility: (At 20℃g/100ml solvent)Water 　　　0 Methyl Ethyl Ketone 24Xylene 　　　　　44 Ethyl Acetate 20Minersal Spirits 　　　　　14 n-Butyl acetate 28Applications: UV-328 is a highly effective light stabilizer for a variety of plastics and other organic substrates.It’s used as recommended for the stabilization of styrene home and copolymers, acrylic polymers, unsaturated polyesters, polyvinyl chloride, polylefins, polyruethanes ,polyacetals, etc. UV-328 is a benzotriazole type ultraviolet light absorber (UVA), imparting good light stability for plastics and other organic polymers. UV-328 protects polymers as well as organic pigments from UV radiation helping to preserve the original appearance and physical integrity of molded articles, films, sheets, and fibers during outdoor weathering.Package: The package is the paperboard drum lined with plastic bag.