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471348

Sigma-Aldrich

Methanesulfonic acid solution

70 wt. % in H2O

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

vapor density

3.3 (vs air)

Quality Level

vapor pressure

<1 mmHg ( 20 °C)

concentration

70 wt. % in H2O

impurities

≤1,000 ppm Sulfate (SO4)
≤10 ppm Iron
≤50 ppm Chloride (Cl)

refractive index

n20/D 1.416

density

1.319 g/mL at 25 °C

SMILES string

CS(O)(=O)=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
471356M414155517
Methanesulfonic acid solution 70&#160;wt. % in H2O

471348

Methanesulfonic acid solution

Methanesulfonic acid &#8805;99.0%

471356

Methanesulfonic acid

Methanesulfonic acid solution 4&#160;M (with 0.2% (w/v) tryptamine)

M4141

Methanesulfonic acid solution

Methanesulfonic acid concentrate 0.1&#160;M CH3SO3H in water (0.1N), eluent concentrate for IC

55517

Methanesulfonic acid concentrate

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

100

refractive index

n20/D 1.416

refractive index

n20/D 1.429 (lit.)

refractive index

-

refractive index

-

vapor density

3.3 (vs air)

vapor density

3.3 (vs air)

vapor density

-

vapor density

-

density

1.319 g/mL at 25 °C

density

1.481 g/mL at 25 °C (lit.)

density

-

density

-

vapor pressure

<1 mmHg ( 20 °C)

vapor pressure

1 mmHg ( 20 °C)

vapor pressure

-

vapor pressure

-

General description

The product is a 70% aqueous solution of methanesulfonic acid (MSA). 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 solution may be used to study the corrosion behavior of stainless steel.

Legal Information

Product of Arkema Inc.

pictograms

CorrosionExclamation mark

signalword

Danger

Hazard Classifications

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

Not applicable

flash_point_c

Not applicable

ppe

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


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Corrosion behaviour of stainless steels in aqueous solutions of methanesulfonic acid.
Finsgar M and Milosev I.
Corrosion Science, 52(7), 2430-2438 (2010)
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)
Environmental benefits of methanesulfonic acid. Comparative properties and advantages.
Gernon MD.
Green Chemistry, 1(3), 127-140 (1999)
Chris Twelves et al.
Breast cancer research and treatment, 148(3), 553-561 (2014-11-09)
Data from two phase 3 studies of eribulin were pooled in analyses initially requested by the European Medicines Agency to assess whether specific patient subgroups, previously treated with an anthracycline and a taxane, benefited from eribulin. Study 305/EMBRACE included women

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