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Hong Kun Group UV 329 UV Absorber

Category Other Engineering Material , Additive/Filler for Polymer
Manufacturer Hong Kun Group
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
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Material Notes:
A highly effective light stabilizer, it has a broad UV absorption spectrum and low volatility. For PS, polymethyl methacrylate, unsaturated polyester (UPE), rigid PVC, polycarbonate, ABS resin, etc., esp. in clear products or engineering plastics processed under high temperature. It has synergetic effect if used with antioxidant, which can raise heat and oxidization stabilities of the product. Usual amount to use is 0.1%-1%.Chemical Name: 2-(2'-hydroxy-5-tert-octylphenyl)-1H-benzotriazoleCAS No. 3147-75-9All information provided by Hongkun Group
Physical Properties Metric English Comments
Volatiles <= 0.50 %
<= 0.50 %
Molecular Weight 323 g/mol
323 g/mol
Ash <= 0.050 %
<= 0.050 %
Thermal Properties Metric English Comments
Melting Point 103 - 105.3 °C
217 - 221.5 °F
Optical Properties Metric English Comments
Transmission, Visible >= 97 %

@Wavelength 440 nm
>= 97 %

@Wavelength 440 nm
>= 98 %

@Wavelength 500 nm
>= 98 %

@Wavelength 500 nm
Descriptive Properties Value Comments
Appearance off-white powder
Purity (%) >= 99
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