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Merck

12635

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

Key Documents

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InChI key

SRSXLGNVWSONIS-UHFFFAOYSA-N

InChI

1S/C6H6O3S/c7-10(8,9)6-4-2-1-3-5-6/h1-5H,(H,7,8,9)

SMILES string

OS(=O)(=O)c1ccccc1

assay

98.0% (T)

form

solid

impurities

≤1.0% water

Quality Level

200

solubility

soluble (0.1g in 10ml Water)

functional group

sulfonic acid

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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.

pictograms

CorrosionExclamation mark
GHS05,GHS07

signalword

Danger

hcodes

H302,H314

Hazard Classifications

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

Storage Class

8A - Combustible corrosive hazardous materials

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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

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Certificates of Analysis (COA)

Lot/Batch Number
BCCN8869
BCCL8130
BCCM4776
SHBN4464
BCCJ4922

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Durable Flexible Supercapacitors Utilizing the Multifunctional Role of Ionic Liquids.
Lorenzo M
Energy Technology, 6(1), 196-204 (2018)
Supramolecular salts of 5, 7-dimethyl-1, 8-naphthyridine-2-amine and acids through classical H-Bonds and other intermolecular interactions.
Dong L
Journal of Molecular Structure, 1153, 311-323 (2018)
Vapor-phase nitration of benzene over silica-supported benzenesulfonic acid catalyst
Eiichi S,et al.
Chemistry Letters (Jpn), 16, 2273-2274 (1987)
Vapour phase polymerisation of pyrrole induced by iron (III) alkylbenzenesulfonate salt oxidising agents
Priya S,et al.
Synthetic Metals, 158, 704-711 (2008)
David Scholz et al.
ChemSusChem, 11(13), 2189-2201 (2018-05-08)
The deactivation pathways of sulfonated carbon catalysts prepared from different carbons were studied during the aqueous-phase hydrolysis of cellobiose under continuous-flow conditions. The sulfonation of carbon materials with a low degree of graphitization introduced sulfonic acid groups that are partially
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