Methanesulfonyl chloride

Methanesulfonyl chloride

Names
Preferred IUPAC name Methanesulfonyl chloride
Other names Mesyl chloride
Identifiers
CAS Number	124-63-0 Y
3D model (JSmol)	Interactive image
ChemSpider	29037 N
ECHA InfoCard	100.004.279
PubChem CID	31297
UNII	B17EWY1R7Q Y
CompTox Dashboard (EPA)	DTXSID1021615
SMILES CS(Cl)(=O)=O
Properties
Chemical formula	CH3SO2Cl
Molar mass	114.54 g·mol−1
Appearance	colorless liquid
Odor	Pungent, unpleasant[1]
Density	1.480 g/cm3
Melting point	−32 °C (−26 °F; 241 K)[2]
Boiling point	161 °C (322 °F; 434 K) (at 730 mmHg)
Solubility in water	Reacts[3][4]
Solubility	Soluble in alcohol, ether and most organic solvents[5]
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	Lachrymator, highly toxic, corrosive
Flash point	>110 °C (230 °F; 383 K)[6]
Related compounds
Other anions	Methanesulfonyl fluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

Methanesulfonyl chloride (mesyl chloride) is an organosulfur compound with the formula CH₃SO₂Cl. Using the organic pseudoelement symbol Ms for the methanesulfonyl (or mesyl) group CH₃SO₂–, it is frequently abbreviated MsCl in reaction schemes or equations. It is a colourless liquid that dissolves in polar organic solvents but is reactive toward water, alcohols, and many amines. The simplest organic sulfonyl chloride, it is used to make methanesulfonates and to generate the elusive molecule sulfene (methylenedioxosulfur(VI)).^[7]