4-Ethylbenzenesulfonic acid

4-乙基苯磺酸

Also known as: p-Ethylbenzenesulfonic acid, 4-ethyl-benzenesulfonic acid, Benzenesulfonic acid, 4-ethyl-, p-ethylbenzenesulphonic acid, phenylethane-p-sulfonate, ethylbenzene-4-sulphonic acid

4-Ethylbenzenesulfonic acid (CAS 98-69-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H10O3S and a molecular weight of 186.228 g/mol. It is also known as p-Ethylbenzenesulfonic acid, 4-ethyl-benzenesulfonic acid and Benzenesulfonic acid, 4-ethyl-. Key properties include a density of 1.3±0.1 g/cm3 and a flash point of >230 °F. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
98-69-1
Jingsj CID
J-10518-5
Molecular Formula
C8H10O3S
Chinese Name
4-乙基苯磺酸
Molecular Weight
186.228 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Density1.3±0.1 g/cm3
Flash Point>230 °F

GHS Safety & Compliance

CorrosionSignal word: Danger

Frequently Asked Questions

What is the CAS number of 4-Ethylbenzenesulfonic acid?

The CAS number of 4-Ethylbenzenesulfonic acid is 98-69-1.

What are the molecular formula and molecular weight of 4-Ethylbenzenesulfonic acid?

4-Ethylbenzenesulfonic acid has molecular formula C8H10O3S and molecular weight 186.228 g/mol.

Is 4-Ethylbenzenesulfonic acid hazardous?

4-Ethylbenzenesulfonic acid has GHS signal word Danger.

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

Last updated:

How to cite: Jingsj. "4-Ethylbenzenesulfonic acid (CAS 98-69-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-10518-5 (accessed 2026-10-22).

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