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Benzenesulfonic acid

98.0% (T)

Synonym(s):

Phenylsulfonic acid

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About This Item

Linear Formula:
C6H5SO3H
CAS Number:
98-11-3
Molecular Weight:
158.18
UNSPSC Code:
12352106
NACRES:
NA.22
PubChem Substance ID:
57647013
EC Number:
202-638-7
Beilstein/REAXYS Number:
742513
MDL number:
MFCD00011689
Assay:
98.0% (T)
Form:
solid
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Quality Segment

assay

98.0% (T)

form

solid

impurities

≤1.0% water

solubility

soluble (0.1g in 10ml Water)

functional group

sulfonic acid

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

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.

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Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

Hazard Codes

H302,H314

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1B

Storage Class

8A - Combustible corrosive hazardous materials

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable

PPE (personal protective equipment)

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

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