UV Absorber 320

Chemical Name: 2-(2'-hydroxy-3',5'-di-t-butyl-phenyl)benzotriazole

Formula: C20H25N3O

CAS NO.: 3846-71-7

Molecular Weight: 323.4



Appearance Yellowish crystalline powder
Purity ≥99%(HPLC)
Melting Point 152-156 ℃
Ash ≤0.1%
Loss On Drying ≤0.3%
Transmittance 460 nm≥97%   500 nm≥98%

Properties and Application:

UV-320 is a high-efficient light stabilizer, which has strong ultraviolet absorbing ability and low volatility characteristics.
UV-320 protects polymers as well as organic pigments from UV radiation helping to preserve the original appearance and physical integrity of molded articles, films, sheets and fibers during outdoor weathering. It is suitable for PVC, unsaturated polyester and other polymers.

Recommended dosage

PVC: 0.25-0.5 %

unsaturated polyester: 0.2-0.4%

Polyester: 0.3-0.5%

Package: 20/25kg cartons or drums.

Company Info

Henan Wising Chem Co., Ltd