C12H3Cl7
395.3 g/mol
Industrial ChemicalWarning
2,2',3,3',4,4',6-HEPTACHLOROBIPHENYL
CAS52663-71-5
Category
Industrial Chemical
Compound Class
Halocarbon
Primary Use
Polychlorinated biphenyl industrial chemical
2,2',3,3',4,4',6-Heptachlorobiphenyl is one of 209 polychlorinated biphenyls (PCBs), a group of synthetic organic compounds. PCBs were manufactured as commercial mixtures but banned in the 1970s due to bioaccumulation and harmful health effects; however, they persist in the environment.
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
ApplicationSame Use
2,2',3,4',6'-pentachlorobiphenyl
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CAS40186-71-8
Polychlorinated biphenyl industrial chemical
ReferenceSame Category
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CAS52664-35-4
Thiophosphate ester intermediate
ReferenceSame Category
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CAS527-53-7
Solvent and intermediate in chemical manufacturing
ReferenceSame Category
2-amino-4,6-dichlorophenol
CAS527-62-8
chemical intermediate
ReferenceSame Category
2-thiophenecarboxylic acid
CAS527-72-0
Lubricating grease thickener sodium salt
Safety Reference
Warning
H373May cause damage to organs through prolonged or repeated exposure
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
Customs Tariff Classification
The international HS code for 2,2',3,3',4,4',6-HEPTACHLOROBIPHENYL (CAS 52663-71-5) 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
1,2,3,5-tetrachloro-4-(2,3,4-trichlorophenyl)benzene
InChIKey
TZMHVHLTPWKZCI-UHFFFAOYSA-N
SMILES
C1=CC(=C(C(=C1C2=C(C(=C(C=C2Cl)Cl)Cl)Cl)Cl)Cl)Cl
Synonyms (7)
- Pcb No. 171
Sourcing 2,2',3,3',4,4',6-HEPTACHLOROBIPHENYL?
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