12635

Benzenesulfonic acid

98.0% (T)

• Synonym(s): Phenylsulfonic acid
• Linear Formula: C₆H₅SO₃H
• CAS Number: 98-11-3
• Molecular Weight: 158.18
• Beilstein/REAXYS Number: 742513
• EC Number: 202-638-7
• MDL number: MFCD00011689
• UNSPSC Code: 12352106
• PubChem Substance ID: 57647013
• NACRES: NA.22

Properties

• Quality Level: 200
• assay: 98.0% (T)
• form: solid
• impurities: ≤1.0% water
• SMILES string: OS(=O)(=O)c1ccccc1
• InChI: 1S/C6H6O3S/c7-10(8,9)6-4-2-1-3-5-6/h1-5H,(H,7,8,9)
• InChI key: SRSXLGNVWSONIS-UHFFFAOYSA-N

Description

General description

Benzenesulfonic acid (BSA), also known as phenylsulfonic acid, is the simplest aromatic sulfonic acid. It is also used as a catalyst for Michael′s reactions and in the oxidative alkenylation process.

Application

Benzenesulfonic acid is an aryl sulfonic acid that can be used:

• As an oxidizing agent in the synthesis of Fe(III) benzenesulfonate.
• As a catalyst during the vapor-phase nitration of benzene.
• As a reagent in the synthesis of organic salts.
• To form an organic salt with 5,7-dimethyl-1,8-naphthyridine-2-amine, that can be a synthon for developing supramolecular structures.
• As a dopant for the polymerization of pyrrole to form poly(pyrrole), a conducting polymer useful in the development of flexible capacitors.

Safety Information

• pictograms: GHS05,GHS07
• signalword: Danger
• hcodes: H302,H314
• pcodes: P260 - P280 - P301 + P312 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1B
• Storage Class: 8A - Combustible corrosive hazardous materials
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges