C20H24ClN3O
357.9 g/mol
Industrial ChemicalWarning
2,4-Di-tert-butyl-6-(5-chloro-2H-benzotriazol-2-yl)phenol
CAS3864-99-1EC223-383-8
Category
Industrial Chemical
Compound Class
Heterocycle
Primary Use
UV absorber for plastics
This compound is a benzotriazole derivative used as a UV absorber in plastic materials to enhance their resistance to degradation from ultraviolet light exposure. Its structure features a phenolic hydroxyl group and aromatic rings that contribute to its photostabilizing function.
UV absorber for plastics
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.
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
Relevant lists:EU REACH Authorisation List
CAS 3864-99-1
Related Compounds
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ReferenceSame Category
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Safety Reference
Warning
H373May cause damage to organs through prolonged or repeated exposure
H412Harmful to aquatic life with long lasting effects
Regulatory Compliance2
- EU REACH Authorisation ListEURegulationRestricted
- EU REACH SVHCEURegulation
Customs Tariff Classification
The international HS code for 2,4-Di-tert-butyl-6-(5-chloro-2H-benzotriazol-2-yl)phenol (CAS 3864-99-1) is 2933.99.
HS code (international, 6-digit)
2933.99
EU CN code (8-digit)
2933 99 50
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
2,4-ditert-butyl-6-(5-chlorobenzotriazol-2-yl)phenol
InChIKey
UWSMKYBKUPAEJQ-UHFFFAOYSA-N
SMILES
CC(C)(C)C1=CC(=C(C(=C1)N2N=C3C=CC(=CC3=N2)Cl)O)C(C)(C)C
Synonyms (29)
- ANTIOXIDANT 327
- Tinuvin 327
- Uvazol 237