Ethyl sulfate process in which ethylene is reacted with sulfuric acid to produce ethyl sulfate followed by hydrolysis, but this method has been mostly replaced by direct hydration of ethylene. Ethyl sulfate can be produced in a laboratory setting by reacting ethanol with sulfuric acid under a gentle boil, while keeping the reaction below 140 °C. The sulfuric acid must be added dropwise or the reaction must be actively cooled because the reaction itself is highly exothermic. If the temperature exceeds 140 °C, the ethyl sulfate product tends to react with residual ethanol starting material, producing diethyl ether. If the temperature exceeds
Ethyl Corporation Ethyl Corporation Ethyl Corporation is a fuel additive company headquartered in Richmond, Virginia in the United States. The company is a distributor of fuel additives. Among other products, Ethyl Corporation distributes tetraethyllead, an additive used to make leaded gasoline. Founded in 1923, Ethyl Corp was formed by General Motors and Standard Oil of New Jersey (Esso). General Motors had the "use patent" for tetraethyllead (TEL) as an antiknock, based on the work of Thomas Midgley, Jr., Charles Kettering, and later Charles Allen Thomas, and Esso had the patent for the manufacture of TEL. Since the patents affected the marketing of