... category: class packaging. 3.Factory direct sales. Dimethyl sulfate M.F.:(CH3)2SO4 M.W.:126.13 Physical and chemical property:Colorless oil ... bisulfide, aliphatic hydrocarbon, and water.Usages: Dimethyl Sulfate is used to make dimethyl sulphoxide, coffeinum, codeine. Vanillin, aminopyrine, trimethoprim, acephate and ...