Chemical name:2-[2'-hydroxy-3',5'-bis(.-dimethyl benzyl)-phenyl]benzotriazole Molecular formula:C22H29N3O Structural formula: Properties: Properties and application:It is a very pale yellowish powder, melting point 139.5-141, efficient light stabilizer, used for PE, PP polyester and coatings. Specifications: Appearance Light yellow powder Melting point ≥139.5-141οC Volatile matter ≤0.5% Ash content ≤0.05% Purity ≥99% Transmissirity 460nm≥97% 500nm≥98%