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|Section2= |Section3= }} Calcium stearate is carboxylate of calcium that is found in some lubricants and surfactants. It is a white waxy powder.〔Angelo Nora, Alfred Szczepanek, Gunther Koenen “Metallic Soaps” in Ullmann's Encyclopedia of Industrial Chemistry 2002, Wiley-VCH, Weinheim. 〕 ==Production and occurrence== Calcium stearate is produced by heating stearic acid, a fatty acid, and calcium oxide: :2 C17H35COOH + CaO → (C17H35COO)2Ca + H2O It is also the main component of soap scum, a white solid that forms when soap is mixed with hard water.〔Hermann Weingärtner, "Water" in Ullmann's Encyclopedia of Industrial Chemistry, 2007, Wiley-VCH, Weinheim. 〕 Unlike soaps containing sodium and potassium, calcium stearate is insoluble in water and does not lather well. Commercially it is sold as a 50% dispersion in water or as a spray dried powder. As a food additive it is known by the generic E number E470. 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「Calcium stearate」の詳細全文を読む スポンサード リンク
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