2',3,4,5,5'-Pentachlorobiphenyl

2',3,4,5,5'-五氯联苯

Also known as: 2,3',4',5,5'-Pentachlorobiphenyl, PCB-124, BZNO 124, 1,1'-Biphenyl, 2',3,4,5,5'-pentachloro-

2',3,4,5,5'-Pentachlorobiphenyl (CAS 70424-70-3) 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 326.43300 g/mol. It is also known as 2,3',4',5,5'-Pentachlorobiphenyl, PCB-124 and BZNO 124. Key properties include a melting point of 95.86°C (estimate), a boiling point of 391.3ºC at 760 mmHg, a density of 1.522g/cm3 and a flash point of 192.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
70424-70-3
Jingsj CID
J-1026893-9
Molecular Formula
C12H5Cl5
Chinese Name
2',3,4,5,5'-五氯联苯
Molecular Weight
326.43300 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point95.86°C (estimate)
Boiling Point391.3ºC at 760 mmHg
Density1.522g/cm3
Flash Point192.9ºC

Frequently Asked Questions

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

The CAS number of 2',3,4,5,5'-Pentachlorobiphenyl is 70424-70-3.

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

2',3,4,5,5'-Pentachlorobiphenyl has molecular formula C12H5Cl5 and molecular weight 326.43300 g/mol.

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

Last updated:

How to cite: Jingsj. "2',3,4,5,5'-Pentachlorobiphenyl (CAS 70424-70-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1026893-9 (accessed 2026-10-24).

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