Skip to Content

Key Documents

View All Documentation

471356

Methanesulfonic acid

≥99.0%, liquid

Synonym(s):

Mesylic acid, MsOH

Sign In to View Organizational & Contract Pricing.

Select a Size

Change View

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

Product Name

Methanesulfonic acid, ≥99.0%

Quality Segment

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

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

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.

Still not finding the right product?

Explore all of our products under Methanesulfonic acid

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

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

Flash Point (°F)

372.2 °F - closed cup

Flash Point (°C)

189 °C - closed cup

PPE (personal protective equipment)

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

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

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