Chemical Product Library / Reference

2-(2'-Hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole

Chemical identity, technical indicators, performance and application reference. Confirm specifications and regulatory suitability against supplier documentation.

Molecular structure for 2-(2'-Hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole

Chemical identity

English name2-(2'-Hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole
English synonymsUV-326;UV absorber 326;Tinuvin 326
Chinese name2-(2'-羟基-3'-叔丁基-5'-甲基苯基)-5-氯苯并三唑
Chinese synonymsUV-326;紫外线吸收剂UV-326;苯并三唑类紫外线吸收剂
Chemical categoryUV Absorbers
CAS No.3896-11-5
EINECS No.223-445-4
Molecular formulaC17H18ClN3O
Molecular weight315.8
PubChem structure images are reference depictions, not proof of composition, purity, grade, or regulatory status. Mixtures and polymers may not have a single representative structure.

Technical indicators

Assay ≥99.0%; melting point 138–141°C; ash ≤0.1%; volatile matter ≤0.5%

Performance characteristics

Pale yellow crystalline powder, benzotriazole UV absorber, good heat resistance and light stability

Application scenarios

Polypropylene, polyethylene, PVC, polyamide, coatings, adhesives