Octrizole

Slightly yellow, rodlike granules

UV-329 is an ultraviolet light absorber (UVA) of the hydroxyphenyl benzotriazole class, which is used as a light stabilizer for plastics and other organic substrates.

UV-329 is an effective light stabilizer for a variety of plastics and other organic substrates.

UV-329 protects polymers from UV radiation, helping to preserve the original appearance and physical integrity of molded articles, films, sheets, and fibers during outdoor weathering.