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|Section2= |Section3= |Section7=〔http://www.newenv.com/resources/nfpa_chemicals/#S〕 |Section8= }} Tetrahydrofuran (THF) is an organic compound with the formula (CH2)4O. The compound is classified as heterocyclic compound, specifically a cyclic ether. It is a colorless, water-miscible organic liquid with low viscosity. It is mainly used as a precursor to polymers.〔 Being polar and having a wide liquid range, THF is a versatile solvent. ==Production== About two hundred thousand tonnes of tetrahydrofuran are produced annually. The most widely used industrial process involves the acid-catalyzed dehydration of 1,4-butanediol. The method is similar to the production of diethyl ether from ethanol. The butanediol is derived from condensation of acetylene with formaldehyde followed by hydrogenation.〔 Du Pont developed a process for producing THF by oxidizing n-butane to crude maleic anhydride followed by catalytic hydrogenation.〔''Merck Index of Chemicals and Drugs'', 9th ed.〕 A third major industrial route entails hydroformylation of allyl alcohol followed by hydrogenation to the butanediol. 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「tetrahydrofuran」の詳細全文を読む スポンサード リンク
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