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UV Absorber 328
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Product Description
UV 328
Chemical name: 2-(2'-Hydroxy-3', 5'-di-tert-pentylphenyl)-benzotriazole
Molecular formula: C22H29N3O
CAS No. 25973-55-1
Properties: It is a pale yellowish powder melting point 81, soluble in benzene, toluene, ethyl acetate and petroleum ether, slightly soluble in ethyl alcohol and methyl alcohol insoluble in water.
Specifications:
Appearance: Light yellow powder
Melting point, º C: 81min
Volatile matter, %: 0.5max
Ash, %: 0.05max
Transmissivity: 460nm 97%min, 500nm 98%min
Purity, %: 99min
Use: UV 328 is a strong ultraviolet light absorber in the 290-400nm. It provides effective light stabilization effect and prevents goods from becoming yellow and degradation. Mainly used in PVC, unsaturated polyester, acrylics, ABS, thermoplastic urethanes, moisture cured polyurethanes, two component epoxies and urethanes, oil alkyds and thermosetting acrylic enamels.
Packing: In 15 kg net poly-ply paper bags or 20kg net fiberboard drum.
| Company: | Sinobase Polymers Limited |
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