Chemical Name

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

Formula

C₂₀H₂₅N_3O

Structure

CAS NO.

3846-71-7

Molecular Weight

323.4

Specifications

Appreance

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%

Advantage and
Application

1. UV-320 is a high-efficient light stabilizer, which has strong ultraviolet absorbing ability and low volatility characteristics.
2. 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.
3. It is suitable for PVC, unsaturated polyester and other polymers.

Recommended
dosage

PVC

unsaturated polyester

Polyester

0.25-0.5 %

0.2-0.4%

0.3-0.5%

Package

20/25KG cartons or drums