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|Section2= |Section3= |Section4= |Section7= |Section8= }} Calcium bromide is the calcium salt of hydrobromic acid with the chemical formula of CaBr2. It is a white powder that reacts with water to form the hexahydrate. CaBr2 is mainly used in drilling fluid.〔 ==Synthesis, structure, and reactions== It is produced by the reaction of calcium oxide, calcium carbonate with hydrobromic acid or the reaction of calcium metal with elemental bromine.〔Michael J. Dagani, Henry J. Barda, Theodore J. Benya, David C. Sanders “Bromine Compounds” Ullmann's Encyclopedia of Industrial Chemistry 2002, Wiley-VCH, Weinheim. 〕 It adopts the rutile structure, featuring octahedral Ca centres bound to six bromide anions, which also bridge to other Ca centres. When strongly heated in air, calcium bromide will produce calcium oxide and bromine: :2 CaBr2 + O2 → 2 CaO + 2 Br2 In this reaction the oxygen oxidizes the bromide to bromine. 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 bromide」の詳細全文を読む スポンサード リンク
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