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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.