C6H3Cl3
181.4 g/mol
Industrial ChemicalWarning
1,2,4-trichlorobenzene
CAS120-82-1EC204-428-0
Category
Industrial Chemical
Compound Class
Halocarbon
Primary Use
Solvent and chemical intermediate
1,2,4-Trichlorobenzene is an industrial chemical that appears as a colorless liquid or white solid with a sharp chlorobenzene odor, melting at about 17 °C. It is primarily used as a solvent and chemical intermediate.
Solvent in chemical manufacturing and dye productionDielectric fluid and heat transfer mediumIntermediate for other organic chemicals
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 Restriction List
CAS 120-82-1
Related Compounds
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(1Z)-1,2-dichloroethylene
CAS156-59-2
Solvent and chemical intermediate
ApplicationSame Use
3-chlorotoluene
CAS108-41-8
Solvent and chemical intermediate
ApplicationSame Use
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CAS109-69-3
Solvent and chemical intermediate
ApplicationSame Use
(RS)-2-methyl-1-butanol
CAS137-32-6
Solvent and chemical intermediate
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2,4-dichlorophenol
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CAS120-93-4
Industrial chemical for polymers and coatings
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CAS120-94-5
solvent and insect repellent
Safety Reference
Warning
H302Harmful if swallowed
H315Causes skin irritation
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H319Causes serious eye irritation
H335May cause respiratory irritation
H336May cause drowsiness or dizziness
H351Suspected of causing cancer
H373May cause damage to organs through prolonged or repeated exposure
H316Causes mild skin irritation
Customs Tariff Classification
The international HS code for 1,2,4-trichlorobenzene (CAS 120-82-1) 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
1,2,4-trichlorobenzene
InChIKey
PBKONEOXTCPAFI-UHFFFAOYSA-N
SMILES
C1=CC(=C(C=C1Cl)Cl)Cl
Synonyms (32)
- 1,2,4-TCB
- 1,2,4-Trichlorbenzol
- 1,2,4-Trichlorobenzol
- 1,2,4-trichlorobenzene
- 1,2,4-triclorobenzene
- 1,2,5-Trichlorobenzene
- 1,3,4-Trichlorobenzene
- 1,4-Trichlorobenzene
- 1,4-Trichlorobenzol
- 2,4-dichlorophenyl chloride
- Benzene, 1,2,4-trichloro-
- Benzene,2,4-trichloro-
- Hipochem GM
- Hostetex L-pec
- Trichlorobenzene A
- Trichlorobenzol
- Trojchlorobenzen
- Trojchlorobenzen [Polish]
- as-trichlorobenzene
- unsym-Trichlorobenzene