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

2,2',3,4,4'-五氯联苯

Also known as: PCB 85, BZ# 85, 1,3,4-Trichloro-2-(2,4-dichlorophenyl)benzene, 2,2',3,4,4'-Pentachloro-1,1'-biphenyl

2,2',3,4,4'-Pentachlorobiphenyl (CAS 65510-45-4) 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 PCB 85, BZ# 85 and 1,3,4-Trichloro-2-(2,4-dichlorophenyl)benzene. Key properties include a melting point of 95.86°C (estimate), a boiling point of 373.8ºC at 760 mmHg, a density of 1.522g/cm3 and a flash point of 179.9ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
65510-45-4
Jingsj CID
J-1992896-4
Molecular Formula
C12H5Cl5
Chinese Name
2,2',3,4,4'-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 Point373.8ºC at 760 mmHg
Density1.522g/cm3
Flash Point179.9ºC

GHS Safety & Compliance

Health Hazard / Environmental HazardSignal word: Warning

Frequently Asked Questions

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

The CAS number of 2,2',3,4,4'-Pentachlorobiphenyl is 65510-45-4.

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

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

Is 2,2',3,4,4'-Pentachlorobiphenyl hazardous?

2,2',3,4,4'-Pentachlorobiphenyl has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "2,2',3,4,4'-Pentachlorobiphenyl (CAS 65510-45-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1992896-4 (accessed 2026-10-24).

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