UV absorbent UV-329
Product name: 2-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol
CAS NO: 3147-75-9
Molecular weight: 323.432
EC NO: 221-573-5
Molecular Formula: C20H25N3O
Alias: Octrizole; 2-benzotriazol-2-yl-4-(1,1,3,3-tetramethylbutyl)phenol; 2-(2-Hydroxy-5-tert-octylphenyl)benzotriazole; UV-329; 2-(2'-Hydroxy-5'-(1,1,3,3-tetramethylbutyl)phenyl)benzotriazole; Cyasorb 5411; Tinuvin 5411; Primesorb5411; 2-(2'-Hydroxy-5'-tert-Octyl Phenyl)-Benzotriazolel; BHSORB-329; 2-(2'-hydroxy-5-tert-octylphenyl) benzotriazole; 2-(2'-HYDROXY-5'-TERT-OCTYLLPHENYL)BENZOTRIAZOLE; 2-(2'-HYDROXY-5'-TERT-OCTYL PHENYL) BENZOTRIAZOLE; LABOTEST-BB LT00053579; EUSORB 323; TINUVIN 329; UV absorber-329; 2-(2H-benzotriazol-2-yl)-4-(2,4,4-trimethylpentan-2-yl)phenol; Ultraviolet absorberUV-329
Structural Formula: 
Specification: ≥98%
The density: 1.1g/cm3
Melting Point: 101-106°C
Boiling point: 471.8°C at 760 mmHg
Flash point: 239.2°C
Appearance: white powder
Assay: ≥98%(HPLC)
Light transmittance: 440nm, ≥98%; 500nm, ≥99%
Uses: As a UV absorbent, this product is mainly suitable for polyolefin, polystyrene, organic glass, polycarbonate, ABS resin and so on. The dosage is usually 0.1-1%.
