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

2,2',3,4,5,6,6'-七氯联苯

Also known as: PCB 186, BZNO 186, 2,2',3,4,5,6,6'-Heptachloro-1,1'-biphenyl, 1,2,3,4,5-pentachloro-6-(2,6-dichlorophenyl)benzene

2,2',3,4,5,6,6'-Heptachlorobiphenyl (CAS 74472-49-4) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C12H3Cl7 and a molecular weight of 395.32300 g/mol. It is also known as PCB 186, BZNO 186 and 2,2',3,4,5,6,6'-Heptachloro-1,1'-biphenyl. Key properties include a melting point of 131.31°C (estimate), a boiling point of 395.2ºC at 760 mmHg, a density of 1.658g/cm3 and a flash point of 189.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
74472-49-4
Jingsj CID
J-1476839-8
Molecular Formula
C12H3Cl7
Chinese Name
2,2',3,4,5,6,6'-七氯联苯
Molecular Weight
395.32300 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point131.31°C (estimate)
Boiling Point395.2ºC at 760 mmHg
Density1.658g/cm3
Flash Point189.3ºC

Frequently Asked Questions

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

The CAS number of 2,2',3,4,5,6,6'-Heptachlorobiphenyl is 74472-49-4.

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

2,2',3,4,5,6,6'-Heptachlorobiphenyl has molecular formula C12H3Cl7 and molecular weight 395.32300 g/mol.

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

Last updated:

How to cite: Jingsj. "2,2',3,4,5,6,6'-Heptachlorobiphenyl (CAS 74472-49-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1476839-8 (accessed 2026-10-24).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.