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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:
Molecular Weight:
158.18
UNSPSC Code:
12352106
NACRES:
NA.22
PubChem Substance ID:
EC Number:
202-638-7
Beilstein/REAXYS Number:
742513
MDL number:
Assay:
98.0% (T)
Form:
solid
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Quality Level

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

signalword

Danger

hcodes

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


Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

12635-25G-F:4.54817338896E12

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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)
Durable Flexible Supercapacitors Utilizing the Multifunctional Role of Ionic Liquids.
Lorenzo M
Energy Technology, 6(1), 196-204 (2018)
Vapor-phase nitration of benzene over silica-supported benzenesulfonic acid catalyst
Eiichi S,et al.
Chemistry Letters (Jpn), 16, 2273-2274 (1987)