Methyl trifluoromethanesulfonate

Methyl trifluoromethanesulfonate
Names
	Preferred IUPAC name Methyl trifluoromethanesulfonate
	Other names Trifluoromethanesulfonic acid, methyl ester; Triflic acid, methyl ester, methyl triflate
Identifiers
CAS Number	333-27-7 ;
3D model (JSmol)	Interactive image;
ChemSpider	9153 ;
ECHA InfoCard	100.005.793
EC Number	206-371-7;
PubChem CID	9526;
UNII	7B25Z22EPV ;
UN number	2924
CompTox Dashboard (EPA)	DTXSID6049272 ;
	InChI InChI=1S/C2H3F3O3S/c1-8-9(6,7)2(3,4)5/h1H3 Key: OIRDBPQYVWXNSJ-UHFFFAOYSA-N ; InChI=1/C2H3F3O3S/c1-8-9(6,7)2(3,4)5/h1H3 Key: OIRDBPQYVWXNSJ-UHFFFAOYAL;
	SMILES COS(=O)(=O)C(F)(F)F;
Properties
Chemical formula	C2H3F3O3S
Molar mass	164.10 g·mol−1
Appearance	Colourless Liquid
Density	1.496 g/mL
Melting point	−64 °C (−83 °F; 209 K)
Boiling point	100 °C (212 °F; 373 K)
Solubility in water	Hydrolyzes
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Corrosive
	GHS labelling:
Signal word	Danger
Hazard statements	H226, H301, H311, H314, H330
Precautionary statements	P210, P233, P303+P361+P353, P304+P340+P310, P305+P351+P338, P380
Flash point	38 °C (100 °F; 311 K)
Related compounds
Related compounds	Methyl fluorosulfonate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Methyl trifluoromethanesulfonate, also commonly called methyl triflate and abbreviated MeOTf, is the organic compound with the formula CF₃SO₂OCH₃. It is a colourless liquid which finds use in organic chemistry as a powerful methylating agent. The compound is closely related to methyl fluorosulfonate (FSO₂OCH₃). Although there has yet to be a reported human fatality, several cases were reported for methyl fluorosulfonate (LC₅₀ (rat, 1 h) = 5 ppm), and methyl triflate is expected to have similar toxicity based on available evidence.