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|Section2= |Section3= |Section4= |Section5= }} 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.〔Merck Index of Chemicals and Drugs, 9th ed., monograph 3753〕 On contact with air, especially on the effect of light, it decomposes and turns yellow or reddish from dissolved iodine. It may also be prepared by reaction between hydroiodic acid and ethanol distilling off the ethyl iodide. Ethyl iodide should be stored in copper powder to avoid fast decomposition, though even with this method samples don't last more than 1 year. Because iodide is a good leaving group, ethyl iodide is an excellent ethylating agent. It is also used as the hydrogen radical promoter. ==Production== Ethyl iodide is prepared by using red phosphorus, ethanol and iodine. There is absolute ethanol and iodine dust used in the process, which contains solving the phosphorus and iodine in the ethanol. During the process the temperature is controlled. The phosphorus triiodide is made in situ, due to the instability of it.〔Csámpai,A;Láng,E;Majer,Zs;Orosz,Gy;Rábai,J;Ruff,F;Schlosser,G;Szabó,D;Vass,E: Szerves Kémiai Praktikum page: 274, Eötvös kiadó 2012 ISBN 978-963-312-129-0〕 : The crude product is purified by distillation. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「ethyl iodide」の詳細全文を読む スポンサード リンク
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