Ethyl iodide 75-03-6

Ethyl iodide (also iodoethane) is a colorless,flammable chemical compound. It has the chemical formula C₂H₅I and is prepared by heating ethanol with iodine and phosphorus. On contact with air, especially on the effect of light, it decomposes and turns yellow or reddish from dissolved iodine.

Because iodide is a good leaving group, ethyl iodide is an excellent alkylating agent. It is also used as the hydrogen radical promoter.