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Chemical name:2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol
Molecular formula:C22H29N3O
Molecular weight:351.5 Structural formula:CAS NO:21615-48-6 Content:≥99% Melting point:80-83℃ Dry weight loss:≤0.5% Ash content:≤0.1% Appearance:White - light yellow powder Solubility:Dissolved in benzene, toluene, styrene, cyclohexane, methyl methacrylate, ethyl acetate, ketone and other organic solvents. Transmittance:460nm≥97%; 500nm≥98% Features and Uses:Uv-328 is an efficient UV absorber with a maximum UV absorption peak of 345nm. Its photostability is similar to that of UV-326 and UV-327. However, it has a good miscibility with resins, low thermal volatilization, and high scrubber resistance. The general dosage is about 1%. It also has excellent light stabilization effect in various coatings. Packing:20 or 25 kg cardboard drum or carton packing.
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