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

Also known as: PCB 118, 2,3',4,4',5-Pentachloro-1,1'-biphenyl, 1,2,4-trichloro-5-(3,4-dichlorophenyl)benzene, 2,4,5,3',4'-Pentachlorobiphenyl, 3,4,2',4',5'-Pentachlorobiphenyl, Biphenyl, 2,3',4,4',5-pentachloro-

2,3',4,4',5-Pentachlorobiphenyl (CAS 31508-00-6) 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. Key properties include a melting point of 107°C, a boiling point of 388.2±37.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 190.6±23.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 31508-00-6
Jingsj CID: J-1027019-6
Molecular Formula: C₁₂H₅Cl₅
Molecular Weight: 326.433 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	107°C
Boiling Point	388.2±37.0 °C at 760 mmHg
Density	1.5±0.1 g/cm3
Flash Point	190.6±23.9 °C
Exact Mass	323.883392
LogP	6.42
Vapor Pressure	0.0±0.9 mmHg at 25°C
Refractive Index	1.620
Storage Conditions	room temp

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

The CAS number of 2,3',4,4',5-Pentachlorobiphenyl is 31508-00-6.

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

2,3',4,4',5-Pentachlorobiphenyl has molecular formula C12H5Cl5 and molecular weight 326.433 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. "2,3',4,4',5-Pentachlorobiphenyl (CAS 31508-00-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1027019-6 (accessed 2026-11-09).

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