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471356 Sigma-Aldrich

Methanesulfonic acid

≥99.0%

  • CAS Number 75-75-2

  • Linear Formula CH3SO3H

  • Molecular Weight 96.11

  •  Beilstein/REAXYS Number 1446024

  •  EC Number 200-898-6

  •  MDL number MFCD00007518

  •  PubChem Substance ID 24870726

  •  NACRES NA.21

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Properties

Related Categories Acids, Acids & Bases, Chemical Synthesis, Organic Acids, Synthetic Reagents More...
Quality Level   200
vapor density   3.3 (vs air)
vapor pressure   1 mmHg ( 20 °C)
InChI Key   AFVFQIVMOAPDHO-UHFFFAOYSA-N
assay   ≥99.0%
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.)

Description

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.

Packaging

2.5 L in glass bottle

5 L in poly drum

5, 25, 100, 500 mL in glass bottle

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
RIDADR 
UN 3265 8 / PGII
WGK Germany 
1
RTECS 
PB1140000
Flash Point(F) 
372.2 °F
Flash Point(C) 
189 °C

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles

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Peer-Reviewed Papers
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References

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