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 iodide excellent ethylating agent. It is also used as the hydrogen radical promoter. Ethyl iodide is prepared by using red phosphorus, absolute ethanol and iodine ; the phosphorus and iodine dissolve in the ethanol, where they form phosphorus triiodide, which must be formed "in situ" because it is unstable. During the process the temperature is controlled. The crude product is purified by distillation. Ethyl iodide Ethyl iodide (also iodoethane) is a colorless, flammable chemical compound. It has the chemical formula CHI and is prepared by heating ethanol with iodine and phosphorus. On contact with air, especially on the effect of light,