UV 320, Tinuvin 320, CAS  3846-71-7

Chemical Name:


Formula C20H25N3O  
Molecular Weight 323.4
CAS# 3846-71-7

Physical Properties:

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


UV 320 is an efficient light stabilizer, strong UV absorption and low volatility. It can effectively protect polyester and organic pigments from ultraviolet radiation, thereby protecting the appearance of molded objects, films, fibers, etc. Tinuvin 320 is suitable for polyvinyl chloride, unsaturated polyester and other polymers.

Recommended dosage: polyester 0.3-0.5%, PVC 0.25-0.5%, unsaturated polyester  0.2-0.5%.

Handing and safety:

>For additional handing and toxicological information, please consult us for Maternal Safety Date Sheet


20/25 KG cartons or drums


UV tinuvin 320 tds baoxu chemical

UV tinuvin 320 msds baoxu chemical