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| UV absorber-329 |
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| 2-(2'-hydroxy-5'-tert-octyllphenyl) benzotriazole |
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| 3147-75-9 |
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UV 329 is an efficient light stabilizer, protects polymers from UV radiation. Keep the original appearance and physical integrity of molded articles, films, sheets, and fibers during outdoor weathering. It is used for rigid PVC, polystyrene, poly (methyl methacrylate), polyester and ABS resins and so on. Can be used in transparent products.
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Properties: white powder, melting point 101-106oC, soluble in benzene, styrene, ethye acetate, slightly soluble in ethyl alcohol, insoluble in water.
Specifications
Appearance White powder
Melting Point,oC 103-105
Volatile,% 0.5max
Ash,% 0.05max
Transmissirity 440nm 97%min, 500nm 98%min
Purity,% 99min
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