It is transparent liquid almost no color or light yellowish.It is the raw material for the coloring agent,medical. Dear Customers, Hope have a good day. We are a professional manufacturer in Qingdao, China. We can supply Methanesulfonyl Chloride in a large number,different specification and high quality. Methanesulfonyl Chloride is used for: It's the raw material for the coloring agent, medical, ...