C20H25N3O
323.4 g/mol
Industrial ChemicalWarning
2-(2-Hydroxy-5-tert-octylphenyl)benzotriazole
CAS3147-75-9EC221-573-5
Category
Industrial Chemical
Compound Class
Heterocycle
Primary Use
UV stabilizer for plastics
2-(2-Hydroxy-5-tert-octylphenyl)benzotriazole is a benzotriazole-type compound used as a UV stabilizer for plastics. It absorbs ultraviolet light to help prevent degradation of polymer materials.
UV stabilizer for plasticsIngredient in cosmetic productsPhotosensitive chemical
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Surfactant and lubricant additive
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H412Harmful to aquatic life with long lasting effects
Regulatory Compliance1
- EU REACH SVHCEURegulation
Customs Tariff Classification
The international HS code for 2-(2-Hydroxy-5-tert-octylphenyl)benzotriazole (CAS 3147-75-9) is 2933.99.
HS code (international, 6-digit)
2933.99
EU CN code (8-digit)
2933 99 80
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
2-(benzotriazol-2-yl)-4-(2,4,4-trimethylpentan-2-yl)phenol
InChIKey
IYAZLDLPUNDVAG-UHFFFAOYSA-N
SMILES
CC(C)(C)CC(C)(C)C1=CC(=C(C=C1)O)N2N=C3C=CC=CC3=N2
Synonyms (46)
- UV-329
- Octrizol [INN-Spanish]
- Octrizole (USAN/INN)
- Octrizolum [INN-Latin]
- Chisorb 5411
- Cyasorb 5411
- Cyasorb UV 5411
- Eversorb 72
- JF 83
- Kemisorb 79
- Octrizol
- Octrizolum
- Seesorb 709
- Spectra-Sorb UV 5411
- Sumisorb 340
- Tinuvin 329
- UV 5411
- UV Absorber-5
- UV-329 (octrizole)
- Uvinul 3029
- Viosorb 583
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