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164283

Sigma-Aldrich

Methyl trifluoromethanesulfonate

≥98%

Synonym(s):

Methyl triflate

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About This Item

Linear Formula:
CF3SO2OCH3
CAS Number:
Molecular Weight:
164.10
Beilstein/REAXYS Number:
774772
EC Number:
MDL number:
UNSPSC Code:
12352108
PubChem Substance ID:
NACRES:
NA.22
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Quality Level

assay

≥98%

form

liquid

refractive index

n20/D 1.326 (lit.)

bp

94-99 °C (lit.)

density

1.45 g/mL at 25 °C (lit.)

functional group

fluoro
triflate

storage temp.

2-8°C

SMILES string

COS(=O)(=O)C(F)(F)F

InChI

1S/C2H3F3O3S/c1-8-9(6,7)2(3,4)5/h1H3

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General description

Methyl trifluoromethanesulfonate is a strong methylating reagent, commonly used for the pre-methylation of polysaccharides under mild basic conditions.

Application

Methyl trifluoromethanesulfonate can be used as a methylation reagent:
  • In the determination of polysulfides, zerovalent sulfur in sulfide-rich water wells, and polysulfide species in electrolyte of a lithium–sulfur battery using chromatography-based techniques.
  • In reactions with potassium enolates.
  • For the conversion of amines to methyl ammonium triflates.

signalword

Danger

Hazard Classifications

Acute Tox. 1 Inhalation - Acute Tox. 3 Dermal - Acute Tox. 3 Oral - Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1B

Storage Class

3 - Flammable liquids

wgk_germany

WGK 3

flash_point_f

100.4 °F - closed cup

flash_point_c

38 °C - closed cup

ppe

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


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