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471356

Sigma-Aldrich

Methanesulfonic acid

≥99.0%

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Synonym(s):
Mesylic acid, MsOH
Linear Formula:
CH3SO3H
CAS Number:
Molecular Weight:
96.11
Beilstein/REAXYS Number:
1446024
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

vapor density

3.3 (vs air)

Quality Level

vapor pressure

1 mmHg ( 20 °C)

assay

≥99.0%

form

liquid

refractive index

n20/D 1.429 (lit.)

bp

167 °C/10 mmHg (lit.)

mp

17-19 °C (lit.)

solubility

water: soluble 1,000 g/L at 20 °C

density

1.481 g/mL at 25 °C (lit.)

SMILES string

O=S(O)(C)=O

InChI

1S/CH4O3S/c1-5(2,3)4/h1H3,(H,2,3,4)

InChI key

AFVFQIVMOAPDHO-UHFFFAOYSA-N

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1 of 4

This Item
47134818626081910
vibrant-m

471356

Methanesulfonic acid

vibrant-m

471348

Methanesulfonic acid solution

vibrant-m

186260

Ethanesulfonic acid

vibrant-m

81910

Propionic acid

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

vapor pressure

1 mmHg ( 20 °C)

vapor pressure

<1 mmHg ( 20 °C)

vapor pressure

-

vapor pressure

2.4 mmHg ( 20 °C)

mp

17-19 °C (lit.)

mp

-

mp

−17 °C (lit.)

mp

−24-−23 °C (lit.)

solubility

water: soluble 1,000 g/L at 20 °C

solubility

-

solubility

water: soluble

solubility

organic solvents: soluble(lit.), water: soluble(lit.)

vapor density

3.3 (vs air)

vapor density

3.3 (vs air)

vapor density

-

vapor density

2.55 (vs air)

General description

Methanesulfonic acid (MSA) is a strong organic acid. The chemical oxidation of dimetyl sulfide in the atmosphere leads to the formation of MSA in large quantities. MSA undergoes biodegradation by forming CO2 and sulphate. It is considered a green acid as it is less toxic and corrosive in comparison to mineral acids.1 The aqueous MSA solution has been considered a model electrolyte for electrochemical processes.

Application

Methanesulfonic acid may be used:
  • As a catalyst to produce linear alkylbenzenes by the addition reaction between long-chain olefins and benzene.
  • To prepare polyaniline (PANI)/graphene composites with enhanced thermal and electrical properties.
  • As a catalyst for the transformation of glucose/xylose mixtures to levulinic acid and furfural.

pictograms

CorrosionExclamation mark

signalword

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B - STOT SE 3

target_organs

Respiratory system

Storage Class

8A - Combustible, corrosive hazardous materials

wgk_germany

WGK 1

flash_point_f

372.2 °F - closed cup

flash_point_c

189 °C - closed cup

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter


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Customers Also Viewed

Slide 1 of 1

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Facile in-situ preparation of polyaniline/graphene nanocomposites using methanesulfonic acid.
Kim DH and Park SY.
Polymer, 55(12), 2928-2935 (2014)
Use of methanesulfonic acid as catalyst for the production of linear alkylbenzenes.
Luong BX, et al.
J. Catal., 226(2), 301-307 (2004)
Methanesulfonic acid-catalyzed conversion of glucose and xylose mixtures to levulinic acid and furfural.
Rackemann DW, et al.
Industrial Crops and Products, 52, 46-57 (2014)
Methane Sulphonic Acid is Green Catalyst in Organic Synthesis.
Kulkarni P.
Orient. J. Chem., 31(1), 447-451 (2015)
Microbial metabolism of methanesulfonic acid.
Kelly DP and Murrell JC.
Archives of Microbiology, 172(6), 341-348 (1999)

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