Difluoromethanesulfonic acid

二氟甲磺酸

Also known as: difluoromethanesulphonic acid, difluormethansulfonsaeure, diflic acid, methanesulfonic acid, 1,1-difluoro-, 1,1-difluoromethanesulfonic acid

Difluoromethanesulfonic acid (CAS 40856-07-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula CH2F2O3S and a molecular weight of 132.08700 g/mol. It is also known as difluoromethanesulphonic acid, difluormethansulfonsaeure and diflic acid. Key property: a density of 1.764g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
40856-07-3
Jingsj CID
J-997951-0
Molecular Formula
CH2F2O3S
Chinese Name
二氟甲磺酸
Molecular Weight
132.08700 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Density1.764g/cm3

Frequently Asked Questions

What is the CAS number of Difluoromethanesulfonic acid?

The CAS number of Difluoromethanesulfonic acid is 40856-07-3.

What are the molecular formula and molecular weight of Difluoromethanesulfonic acid?

Difluoromethanesulfonic acid has molecular formula CH2F2O3S and molecular weight 132.08700 g/mol.

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

Last updated:

How to cite: Jingsj. "Difluoromethanesulfonic acid (CAS 40856-07-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-997951-0 (accessed 2026-10-24).

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