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.