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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Thorium oxalate ： ウィキペディア英語版 Thorium oxalate Thorium oxalate is a white insoluble compound of thorium that is prepared by mixing a thorium nitrate solution in acid medium with an oxalic acid solution. By mixing 0.5 M thorium nitrate solution with 0.5 M oxalic acid solution at room temperature thorium oxalate dihydrate ( Th(C2O4)2.2H2O ) is obtained. Thorium oxalate hexahydrate is obtained when precipitated from 2 M nitric acid solution. On heating to 500° it is converted to thorium oxide.〔Enver Oktay, Ahmet Yayli (2001) (''Physical properties of thorium oxalate powders and their influence on the thermal decomposition'' ) Journal of Nuclear Materials Volume 288, Issue 1, January 2001, Pages 76–82〕 The solubility product (Ksp) of thorium oxalate is 5.01 X 10−25〔Taishi KOBAYASHI, Takayuki SASAKI, Ikuji TAKAGI & Hirotake MORIYAMA (2009) (''Solubility of Thorium(IV) in the Presence of Oxalic and Malonic Acids'' ) Journal of Nuclear Science and Technology, Vol. 46, No. 11, p. 1085–1090〕 Density of anhydrous thorium oxalate is 4.637 g/cm3. ==References== 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「Thorium oxalate」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.