C6H2Cl4
215.9 g/mol
Industrial ChemicalWarning
1,2,3,4-TETRACHLOROBENZENE
CAS634-66-2EC211-214-0
Category
Industrial Chemical
Compound Class
Halocarbon
Primary Use
dielectric fluid component and chemical intermediate
1,2,3,4-Tetrachlorobenzene is one of three isomeric tetrachlorobenzenes, existing as a colorless crystalline compound. It is used as a component in dielectric fluids and as a chemical intermediate in industrial processes.
dielectric fluid componentchemical intermediate
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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Related Compounds
ReferenceSame Category
2,4,6-Trichloroaniline
CAS634-93-5
intermediate for benzene derivatives and fungicides
ReferenceSame Category
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Flux agent
ReferenceSame Category
4-hydroxyisophthalic acid
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chemical intermediate for synthesis
ReferenceSame Category
Monosodium 5-sulfoisophthalate
CAS6362-79-4
polyester monomer intermediate
Referencestereoisomer of
Benzene-1,2-d2, 3,4,5,6-tetrachloro-
CAS2199-73-7
research compound
Safety Reference
Warning
H302Harmful if swallowed
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H336May cause drowsiness or dizziness
H360May damage fertility or the unborn child
H371May cause damage to organs
H373May cause damage to organs through prolonged or repeated exposure
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for 1,2,3,4-TETRACHLOROBENZENE (CAS 634-66-2) is 2903.99.
HS code (international, 6-digit)
2903.99
EU CN code (8-digit)
2903 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
1,2,3,4-tetrachlorobenzene
InChIKey
GBDZXPJXOMHESU-UHFFFAOYSA-N
SMILES
C1=CC(=C(C(=C1Cl)Cl)Cl)Cl
Synonyms (15)
- 1,2,3,4-TETRACHLOROBENZENE
- 1,2,3,4-Tetrachlorbenzol
- 1,2,3,4-benzene tetrachloride
- 1,3,4-Tetrachlorobenzene
- 2,3,4,5-tetrachlorobenzene
- Benzene, 1,2,3,4-tetrachloro-
- Tetrachlorobenzene, 1,2,3,4-?
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