Methane Sulfonyl Chloride

Cas Number


Other Names

Mesyl chloride

The formula



Methanesulfonyl chloride (mesyl chloride) is an organosulfur compound with the formula CH3SO2Cl. 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.

Physical and Chemical Properties
Physical state and appearance Colorless transparent oil liquid
Molecular Weight 114.55 g/mole
Flash point CLOSED CUP: 110°C (230°F).
Melting Point -32°C
Specific Gravity 1.4805 (Water = 1)
Vapor Density 3 (Air = 1)
Purity 99.5% min
Water Content ≤200ppm
Viscosity(25°C) 1.97cp
Heavy Metal ≤10ppm
Fe3+ ≤10ppm
Density(18/4°C) 1.48

Electroplating and electrochemical processes

1. Methane Sulphonyl Chloride used in organic synthesis, dyestuffs, pharmacy and pesticides etc

2. It can be used as catalyst, curing agent and stabilizer in organic synthesis; in dyestuff industry

3. It is used as the raw material for disperse red 343; in pharmacy

4. It is used to produce olsalazine sodium etc