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Chemical Compositions

2-(2'-Hydroxy-5'-methyl-phenyl)benzotriazole

CAS NO.

2440-22-4

Molecular Formula

C13H11N3O

Features

Colorless or light yellow crystal. Soluble in a variety of organic solvents such as gasoline, benzene, acetone, water solubility is 
small. Soluble in alkali to produce yellow salt.

Technical index

Appearance white to light yellow particles Crystalline powder 
Light transmittance 440nm ≥ 95.0% 500nm ≥ 97.0% 
Volatile ≤ 0.5% 
Ash ≤ 0.1% 
Melting point 128-133 ℃ 
Content ≥ 99% 
Toxicity Low toxicity

Main application

As UV absorbers, this product is mainly used in polyester, epoxy cellulose acetate, polyvinyl chloride, polystyrene, plexiglass, polyacrylonitrile resin. The maximum absorption wavelength range of 270-380nm.

Recommended dosage

Thin products 0.1-0.5%, thick products 0.05-0.2%.

Packing

20 kg Cartons or pails packed in plastic bags.

Storage

Avoid light, light, humidity, to avoid sulfur or halogen-containing light stabilizer. 
sealed, it needs to be stored under dry and dark conditions.