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3,4-Dimethylbenzenesulfonic acid

Also known as: 3,4-Dimethylbenzenesulfonic acid, 3,4-Dimethyl-benzenesulfonic acid, 3,4-Dimethyl-benzolsulfonsaeure, 3,4-Xylenesulfonic acid, o-Xylene-4-sulfonic acid, o-Xylol-sulfonsaeure-(4), xylene sulphonic acid

3,4-Dimethylbenzenesulfonic acid (CAS 618-01-9) 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 186.22800 g/mol. Key properties include a melting point of 81-83ºC and a density of 1.286. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
618-01-9
Jingsj CID
J-999905-7
Molecular Formula
C8H10O3S
Molecular Weight
186.22800 g/mol
Category
Organic Acids
Last updated
8/21/2026
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Physicochemical Properties

Melting Point81-83ºC
Density1.286
Exact Mass186.03500
PSA62.75000
LogP2.63090

Frequently Asked Questions

What is the CAS number of 3,4-Dimethylbenzenesulfonic acid?

The CAS number of 3,4-Dimethylbenzenesulfonic acid is 618-01-9.

What are the molecular formula and molecular weight of 3,4-Dimethylbenzenesulfonic acid?

3,4-Dimethylbenzenesulfonic acid has molecular formula C8H10O3S and molecular weight 186.22800 g/mol.

What are the upstream and downstream products of 3,4-Dimethylbenzenesulfonic acid?

For 3,4-Dimethylbenzenesulfonic acid, Upstream Products: o-xylene, 3,4-dimethylbenzenesulfonyl chloride; Downstream Products: o-xylene, 4-Bromo-1,2-dimethylbenzene, 4-Chloro-1,2-dimethylbenzene.

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

Last updated:

How to cite: Jingsj. "3,4-Dimethylbenzenesulfonic acid (CAS 618-01-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-999905-7 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.