2-formylbenzenesulfonic acid

邻磺酸苯甲醛

Also known as: 2-sulfobenzaldehyde, benzaldehyde-2-sulfonic acid, o-formylbenzenesulfonic acid, o-sulfobenzaldehyde, 2-sulphobenzaldehyde, Benzaldehyde-o-sulfonic acid, Benzenesulfonic acid, 2-formyl-, UNII-L6N0M32U65

2-formylbenzenesulfonic acid (CAS 91-25-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H5NaO4S and a molecular weight of 208.16700 g/mol. It is also known as 2-sulfobenzaldehyde, benzaldehyde-2-sulfonic acid and o-formylbenzenesulfonic acid. Key property: a density of 1.503g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
91-25-8
Jingsj CID
J-1495791-6
Molecular Formula
C7H5NaO4S
Chinese Name
邻磺酸苯甲醛
Molecular Weight
208.16700 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Density1.503g/cm3

Frequently Asked Questions

What is the CAS number of 2-formylbenzenesulfonic acid?

The CAS number of 2-formylbenzenesulfonic acid is 91-25-8.

What are the molecular formula and molecular weight of 2-formylbenzenesulfonic acid?

2-formylbenzenesulfonic acid has molecular formula C7H5NaO4S and molecular weight 208.16700 g/mol.

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

Last updated:

How to cite: Jingsj. "2-formylbenzenesulfonic acid (CAS 91-25-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1495791-6 (accessed 2026-10-25).

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