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|Section2= |Section3= |Section4= |Section5= }} 2-Butanol, or ''sec''-butanol, is an organic compound with formula CH3CH(OH)CH2CH3. This secondary alcohol is a flammable, colorless liquid that is soluble in 3 parts water and completely miscible with polar organic solvents such as ethers and other alcohols. It is produced on a large scale, primarily as a precursor to the industrial solvent methyl ethyl ketone. 2-Butanol is chiral and thus can be obtained as either of two stereoisomers designated as ''(R)''-(−)-2-butanol and ''(S)''-(+)-2-butanol. It is normally found as an equal mixture of the two stereoisomers — a racemic mixture. ==Manufacture and applications== 2-Butanol is manufactured industrially by the hydration of 1-butene or 2-butene: : Sulfuric acid is used as a catalyst for this conversion.〔.〕 In the lab it can be prepared via Grignard reaction by reacting ethylmagnesium bromide with acetaldehyde in dried diethyl ether or tetrahydrofuran. Although some 2-butanol is used as a solvent, it is mainly converted to butanone ("MEK"), which is an important industrial solvent and found in many domestic cleaning agents and paint removers. Volatile esters of 2-butanol have pleasant aromas and are used in small amounts as perfumes or in artificial flavors. 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「2-Butanol」の詳細全文を読む スポンサード リンク
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