Colorless transparent oily liquid. Boiling point 188,Freeze point -27. Specific gravity in 20 :1.33. Slight soluble in water, Soluble in aether, acetone. This product in organic synthesis as a substitute of Halon for methylation agent is widely used in medicine, dyes, spices, pesticide industry and so on. For example,it can produce dimethyl sulphoxide, caffeine, codeine, vanillin, aminopyrine, acephate and so on This product is a toxic liquid, GB 6.1, UN NO 1595.it packed in PLS drums or tanker should be stored in dry and well-ventilated place, avoid the sun and rain.