UV ABSORBER UV 329 CAS NO. 3147-75-9


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0 20' Container / Day
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L/C, T/T, D/P

Product Specifications

UV ABSORBER UV 329CAS NO.3147-75-9
Chemical name: 2- (2'-Hydroxy-5'-tert-octylphenyl)benzotriazole
CAS No.:3147-75-9
Molecular formular:C20H25N3O
Molecular weight:323
Molecular structure

Appearance: White powder
Melting point,℃:103-105
Assay (HPLC), %: ≥99
Ash, %: ≤0.1
Loss on drying, %: ≤0.3
Transmittance 450nm≥98%

UV ABSORBER HOSORB-329 is excellent benzotriazole ultraviolet absorbent with effective absorption of ultraviolet radiation in 270-380 nm region. It is suitable for polyester, rigid PVC, PS, PMMA, PC, ABS resin etc. It is particularly suitable for the protection of polycarbonates. In transparent products and high temperature processing of engineering plastics, its effect is excellent. It can also be used for polyolefin. info at hhochem. com