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471356

Methanesulfonic acid

Name: Methanesulfonic acid
Brand: SIAL

≥99.0%, liquid

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:

24870726

UNSPSC Code:

12352100

EC Number:

200-898-6

MDL number:

MFCD00007518

Beilstein/REAXYS Number:

1446024

Assay:

≥99.0%

Form:

liquid

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Properties

Product Name

Methanesulfonic acid, ≥99.0%

Quality Level

200

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

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

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.

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pictograms

GHS05,GHS07

signalword

Danger

hcodes

H290,H302 + H312,H314,H335

pcodes

P234 - P261 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338

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

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

Regulatory Information

危险化学品

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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)

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Global Trade Item Number

SKU	GTIN
471356-2.5L	04061832359922
471356-100ML	04061837548925
471356-25ML	04061832359939
471356-500ML	04061837548932
471356-5L	04061837548949
471356-5ML	04061837548956