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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 Praseodymium(III) sulfate ： ウィキペディア英語版 Praseodymium(III) sulfate |Section2= |Section7= |Section8= }} Praseodymium(III) sulfate is a Praseodymium compound with formula Pr2(SO4)3. It is an odourless whitish-green crystalline compound. The anhydrous substance readily absorbs water forming pentahydrate and octahydrate.〔 == Properties == Praseodymium sulfate is stable under standard conditions. At elevated temperatures, it gradually loses water and becomes more whitish. Like all rare earth sulfates, its solubility ''decreases'' with temperature, a property once used to separate it from other, non-rare earth compounds. Pentahydrate and octahydrate have monoclinic crystal structures with densities of 3.713 and 2.813 g/cm3, respectively. The octahydrate crystals are optically biaxial, with refractive index components of nα = 1.5399, nβ = 1.5494 and nγ = 1.5607.〔 They belong to the space group C12/c1 (No. 15) and have lattice constants ''a'' = 1370.0(2) pm, ''b'' = 686.1(1) pm, ''c'' = 1845.3(2) pm, β = 102.80(1)° and ''Z'' = 4.〔 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「Praseodymium(III) sulfate」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.