UV absorbent UV-328
Product name: 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol
CAS NO: 25973-55-1
Molecular weight: 351.4852
EC NO: 247-384-8
Molecular Formula: C22H29N3O
Alias: 2-(2-Hydroxy-3,5-dipenryl-phenyl) benzotriazole; 2-(2H-benzotriazol-2-yl)-4,6-bis(1,1-dimethylpropyl)-phenol; 2-(2H-hydroxy-3-5-Di-tert-Amyllphenyl)benzotriazole; UV-328; Tinuvin 328; Primesorb328; Ultraviolet absorbent UV-328; 2-(2'-Hydroxy-3',5'-di-tert-Pentyl Phenyl)-Benzotriazole; BHSORB-328; 2-(2'-Hydroxy-3',5-dipenryl-phenyl) benzotriazole; UV absorber-328; UV absorber UV-328; 2-(2H-benzotriazol-2-yl)-4,6-bis(2-methylbutan-2-yl)phenol; Ultraviolet absorberUV-328
Structural Formula: 
Appearance: white-Light yellow powder
Assay: ≥99%
Melting point: 80-83°C
Loss on dry: ≤0.5%
Ash: ≤0.1%
Uses: As a UV absorbent, this product is mainly suitable for polyolefin, polystyrene, polyvinyl chloride (PVC), polyurethane, polyester, etc. Maximum absorption wavelength 345 nm. The general dosage is about 1%.
