Process for the production of high purity methanesulphonyl fluoride at an improved yield

摘要

A process for producing methanesulfonyl fluoride involves reacting methanesulfonyl chloride, a metal fluoride and water to obtain a reaction product, subjecting the reaction product to distillation in the presence of water in an amount of 0.7 times or more the amount of the methanesulfonyl chloride to obtain a distillate. The distillate has a water layer and a methanesulfonyl fluoride layer. The distillate is subjected to phase separation to separate the methanesulfonyl fluoride layer from the water layer, and the methanesulfonyl fluoride is recovered.