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2,3',4,4',6-Pentachlorobiphenyl

2,3',4,4',6-五氯联苯

Also known as: 1,1'-Biphenyl, 2,3',4,4',6-pentachloro-, 1,3,5-trichloro-2-(3,4-dichlorophenyl)benzene, 2,3',4,4',6-Pentachloro-1,1'-biphenyl, 2,4,6,3',4'-Pentachlorobiphenyl, 2,3',4,4',6-PCB

2,3',4,4',6-Pentachlorobiphenyl (CAS 56558-17-9) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C12H5Cl5 and a molecular weight of 326.433 g/mol. It is also known as 1,1'-Biphenyl, 2,3',4,4',6-pentachloro-, 1,3,5-trichloro-2-(3,4-dichlorophenyl)benzene and 2,3',4,4',6-Pentachloro-1,1'-biphenyl. Key properties include a melting point of 95.86°C (estimate), a boiling point of 371.9±37.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 178.5±23.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
56558-17-9
Jingsj CID
J-1339437-0
Molecular Formula
C12H5Cl5
Chinese Name
2,3',4,4',6-五氯联苯
Molecular Weight
326.433 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point95.86°C (estimate)
Boiling Point371.9±37.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point178.5±23.9 °C

Frequently Asked Questions

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

The CAS number of 2,3',4,4',6-Pentachlorobiphenyl is 56558-17-9.

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

2,3',4,4',6-Pentachlorobiphenyl has molecular formula C12H5Cl5 and molecular weight 326.433 g/mol.

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

Last updated:

How to cite: Jingsj. "2,3',4,4',6-Pentachlorobiphenyl (CAS 56558-17-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1339437-0 (accessed 2026-10-22).

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