2,3',5',6-Tetrachlorobiphenyl

2,3',5',6-四氯联苯

Also known as: PCB-73, PCB No. 73, 1,3-dichloro-2-(3,5-dichlorophenyl)benzene, 2,3',5',6-tetrachloro-1,1'-biphenyl

2,3',5',6-Tetrachlorobiphenyl (CAS 74338-23-1) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C12H6Cl4 and a molecular weight of 291.98800 g/mol. It is also known as PCB-73, PCB No. 73 and 1,3-dichloro-2-(3,5-dichlorophenyl)benzene. Key properties include a melting point of 106.53°C (estimate), a boiling point of 348.8ºC at 760 mmHg, a density of 1.441g/cm3 and a flash point of 164.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
74338-23-1
Jingsj CID
J-1027099-8
Molecular Formula
C12H6Cl4
Chinese Name
2,3',5',6-四氯联苯
Molecular Weight
291.98800 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point106.53°C (estimate)
Boiling Point348.8ºC at 760 mmHg
Density1.441g/cm3
Flash Point164.8ºC

Frequently Asked Questions

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

The CAS number of 2,3',5',6-Tetrachlorobiphenyl is 74338-23-1.

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

2,3',5',6-Tetrachlorobiphenyl has molecular formula C12H6Cl4 and molecular weight 291.98800 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',5',6-Tetrachlorobiphenyl (CAS 74338-23-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1027099-8 (accessed 2026-10-25).

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