2,2',3,3',4,5',6,6'-Octachlorobiphenyl is one of 209 polychlorinated biphenyls (PCBs), a group of synthetic organic compounds with 1-10 chlorine atoms attached to biphenyl. PCBs were manufactured as commercial mixtures but were banned in the 1970s because they were found to bioaccumulate and cause harmful health effects; they do not break down readily and are still found 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.
Sourcing 2,2',3,3',4,5',6,6'-Octachlorobiphenyl?
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2,2',3,3',4,4',6-heptachlorobiphenyl
Polychlorinated biphenyl industrial chemical
2,2',3,4',6'-pentachlorobiphenyl
Polychlorinated biphenyl industrial chemical
1,3-Bis(trifluoromethyl)-benzene
industrial solvent and chemical intermediate
4-Fluorobenzotrifluoride
Chemical intermediate for synthesis
(2,4,6-trioxo-1,3,5-triazinane-1,3,5-triyl)triethane-2,1-diyl trisprop-2-enoate
UV-curable monomer for coatings
Cyclopropanecarboxylic acid chloride
Chemical intermediate for synthesis
The international HS code for 2,2',3,3',4,5',6,6'-Octachlorobiphenyl (CAS 40186-71-8) is 2903.99.
2903.99
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.
1,2,3,5-tetrachloro-4-(2,3,5,6-tetrachlorophenyl)benzene
LJQOBQLZTUSEJA-UHFFFAOYSA-N
C1=C(C(=C(C(=C1Cl)Cl)Cl)C2=C(C(=CC(=C2Cl)Cl)Cl)Cl)Cl
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Sourcing 2,2',3,3',4,5',6,6'-Octachlorobiphenyl?
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