2,2',3,3',4,5',6,6'-Octachlorobiphenyl

Also known as: 1,1'-Biphenyl, 2,2',3,3',4,5',6,6'-octachloro-, 1,2,3,5-tetrachloro-4-(2,3,5,6-tetrachlorophenyl)benzene, 2,2',3,3',4,5',6,6'-Octachloro-1,1'-biphenyl

2,2',3,3',4,5',6,6'-Octachlorobiphenyl (CAS 40186-71-8) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C12H2Cl8 and a molecular weight of 429.768 g/mol. Key properties include a melting point of 150.67°C (estimate), a boiling point of 419.2±40.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 204.0±24.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 40186-71-8
Jingsj CID: J-982771-8
Molecular Formula: C₁₂H₂Cl₈
Molecular Weight: 429.768 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	150.67°C (estimate)
Boiling Point	419.2±40.0 °C at 760 mmHg
Density	1.7±0.1 g/cm3
Flash Point	204.0±24.7 °C
Exact Mass	425.766479
LogP	7.50
Vapor Pressure	0.0±1.0 mmHg at 25°C
Refractive Index	1.638

Customs & Trade Information

HS Code	2903999090
Summary	2903999090 halogenated derivatives of aromatic hydrocarbons VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2,2',3,3',4,5',6,6'-Octachlorobiphenyl?

The CAS number of 2,2',3,3',4,5',6,6'-Octachlorobiphenyl is 40186-71-8.

What are the molecular formula and molecular weight of 2,2',3,3',4,5',6,6'-Octachlorobiphenyl?

2,2',3,3',4,5',6,6'-Octachlorobiphenyl has molecular formula C12H2Cl8 and molecular weight 429.768 g/mol.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "2,2',3,3',4,5',6,6'-Octachlorobiphenyl (CAS 40186-71-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-982771-8 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.