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Merck
CN

471348

Methanesulfonic acid solution

70 wt. % in H₂O, solution

Synonym(s):

Mesylic acid, MsOH

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About This Item

Linear Formula:
CH3SO3H
CAS Number:
75-75-2
Molecular Weight:
96.11
NACRES:
NA.21
PubChem Substance ID:
24870724
UNSPSC Code:
12352100
MDL number:
MFCD00007518
Beilstein/REAXYS Number:
1446024

Key Documents

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Product Name

Methanesulfonic acid solution, 70 wt. % in H2O

InChI

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

SMILES string

CS(O)(=O)=O

InChI key

AFVFQIVMOAPDHO-UHFFFAOYSA-N

vapor density

3.3 (vs air)

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

functional group

sulfonic acid

Quality Level

200

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Application

Methanesulfonic acid solution may be used to study the corrosion behavior of stainless steel.

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.

Legal Information

Product of Arkema Inc.

pictograms

CorrosionExclamation mark
GHS05,GHS07

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

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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

Regulatory Information

危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
SDBB2271
STBL2343
STBK8594
STBK3047
STBJ8050

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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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