4-Methylsulfonyl-2,2',4',5,5'-pentachlorobiphenyl

4-甲基磺酰基-2,2',4',5,5'-五氯联苯

Also known as: 1,1'-Biphenyl, 2,2',4,5,5'-pentachloro-4'-(methylsulfonyl)-, 1,4-dichloro-2-methylsulfonyl-5-(2,4,5-trichlorophenyl)benzene, 2,2',4',5,5'-Pentachloro-4-methylsulfonylbiphenyl, 2,2'4,5,5'-pentachlorobiphenyl-4'-methyl sulfone, 4-MeSO2-2,2',4',5,5'-pentachlorobiphenyl, 4-methanesulfonyl-2,2',4',5,5'-pentachlorobiphenyl, 4-methylsulfonyl-2,5,2',4',5'-pentachlorobiphenyl

4-Methylsulfonyl-2,2',4',5,5'-pentachlorobiphenyl (CAS 66640-61-7) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C13H7Cl5O2S and a molecular weight of 404.52300 g/mol. It is also known as 1,1'-Biphenyl, 2,2',4,5,5'-pentachloro-4'-(methylsulfonyl)-, 1,4-dichloro-2-methylsulfonyl-5-(2,4,5-trichlorophenyl)benzene and 2,2',4',5,5'-Pentachloro-4-methylsulfonylbiphenyl. Key properties include a boiling point of 507.3ºC at 760 mmHg, a density of 1.578g/cm3 and a flash point of 260.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
66640-61-7
Jingsj CID
J-1425951-7
Molecular Formula
C13H7Cl5O2S
Chinese Name
4-甲基磺酰基-2,2',4',5,5'-五氯联苯
Molecular Weight
404.52300 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point507.3ºC at 760 mmHg
Density1.578g/cm3
Flash Point260.6ºC

Frequently Asked Questions

What is the CAS number of 4-Methylsulfonyl-2,2',4',5,5'-pentachlorobiphenyl?

The CAS number of 4-Methylsulfonyl-2,2',4',5,5'-pentachlorobiphenyl is 66640-61-7.

What are the molecular formula and molecular weight of 4-Methylsulfonyl-2,2',4',5,5'-pentachlorobiphenyl?

4-Methylsulfonyl-2,2',4',5,5'-pentachlorobiphenyl has molecular formula C13H7Cl5O2S and molecular weight 404.52300 g/mol.

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

Last updated:

How to cite: Jingsj. "4-Methylsulfonyl-2,2',4',5,5'-pentachlorobiphenyl (CAS 66640-61-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1425951-7 (accessed 2026-10-25).

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