Skip to Content
Merck

471356

Methanesulfonic acid

≥99.0%, liquid

Synonym(s):

Mesylic acid, MsOH

Sign In to View Organizational & Contract Pricing.

Select a Size

About This Item

Linear Formula:
CH3SO3H
CAS Number:
75-75-2
Molecular Weight:
96.11
NACRES:
NA.21
PubChem Substance ID:
24870726
UNSPSC Code:
12352100
EC Number:
200-898-6
MDL number:
MFCD00007518
Beilstein/REAXYS Number:
1446024
Assay:
≥99.0%
Form:
liquid

Key Documents

View All Documentation
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

Product Name

Methanesulfonic acid, ≥99.0%

InChI key

AFVFQIVMOAPDHO-UHFFFAOYSA-N

InChI

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

SMILES string

O=S(O)(C)=O

vapor density

3.3 (vs air), [3.3 (vs air)] (vs air)

vapor pressure

1 mmHg ( 20 °C)

assay

≥99.0%

form

liquid

refractive index

n20/D 1.429 (lit.)

pH range

<1

bp

[167 °C/10 mmHg (lit.)], 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.)

functional group

sulfonic acid

Quality Level

200

Looking for similar products? Visit Product Comparison Guide

Related Categories

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.

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.

pictograms

CorrosionExclamation mark
GHS05,GHS07

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

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

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.

Deleterious substance

pdsc

Group 4: Flammable liquids + Type 3 petroleums + Hazardous rank III + Water soluble liquid

fsl

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

471356-25ML:4548173361390 + 471356-20L: + 471356-5L: + 471356-500ML:4548173361406 + 471356-BULK: + 471356-2L: + 471356-VAR: + 471356-5ML: + 471356-100ML:4548173361376 + 471356-2.5L:4548173361383

jan

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
0000086853
0000086853
STBK8919
STBK8371
STBK7211

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

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)
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service