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

Chemical name: 2- (2'-Hydroxy-5'-tert-octylphenyl)benzotriaz , ole
CAS No.：3147-75-9
Molecular formular：C20H25N3O
Molecular weight：323
Molecular structure


Specification
Appearance: White powder
Melting point，℃：103-105
Assay (HPLC), %: ≥99
Ash, %: ≤0.1
Loss on drying, %: ≤0.3
Transmittance 450nm≥98%
500nm≥99%

Solubility (20℃, g/100ml solvent)
Acetone:9 Benzene:32 Chloroform:37 Ethyl acetate:15 n-Hexane:6
Methanol:0.6 Methylene chloride:38 Water＜0.01

Application
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

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