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|Section2= |Section3= |Section4= |Section7= |Section8= }} Potassium hydride, KH, is the inorganic compound of potassium and hydride. It is a white solid, although commercial samples appear gray. A powerful base that is useful in organic synthesis, it is also a dangerously reactive compound. For this reason it is sold commercially as a slurry (~35%) in mineral oil or sometimes paraffin wax to facilitate dispensing.〔''Potassium Hydride in Paraffin: A Useful Base for Organic Synthesis'' Douglass F. Taber and Christopher G. Nelson J. Org. Chem.; 2006; 71(23) pp. 8973–8974 〕 ==Preparation== Potassium hydride is produced by direct combination of the metal and hydrogen: :2 K + H2 → 2 KH This reaction was discovered by Humphry Davy soon after his 1807 discovery of potassium, when he noted that the metal would vaporize in a current of hydrogen when heated just below its boiling point.〔 Humphry Davy (1808), ''The Bakerian Lecture on some new phenomena of chemical changes produced by electricity, particularly the decomposition of fixed alkalies, and the exhibition of the new substances which constitute their bases; and on the general nature of alkaline bodies.'' Philosophical Transactions of the Royal Society, volume 88, pages 1–44. In ''The Development of Chemistry, 1789–1914: Selected essays'', edited by D. Knight, pp. 17–47.〕 Potassium hydride is soluble in fused hydroxides (such as molten sodium hydroxide) and salt mixtures, but not in organic solvents. 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「potassium hydride」の詳細全文を読む スポンサード リンク
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