The Synthesis and Thermal Reorganization of Lithium Heptasodium cyclo-Octaphosphate.
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概要
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Lithium heptasodium <I>cyclo</I>-octaphosphate hexahydrate, LiNa<SUB>7</SUB>P<SUB>8</SUB>O<SUB>24</SUB>·6H<SUB>2</SUB>O, has been prepared by heating lead <I>cyclo</I>-tetraphosphate tetrahydrate at 340°C for 20 min, dissolving the thermal product in a 3% aqueous solution of tetrasodium ethylenediammetetraacetate, and then crystallizing by the addition of lithium chloride and methanol to the solution. When the <I>cyclo</I>-octaphosphate was heated above 180°C, it decomposed to produce phosphates with chain lenghts shorter and longer than that of the <I>cyclo</I>-octaphosphate. The thermally produced phosphates were reorganized to sodium <I>cyclo</I>-triphosphate and a small amount of insoluble polyphosphates by heating at about 300 to 350°C. The phosphates melted at about 620°C.
- 公益社団法人 日本化学会の論文
著者
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Watanabe Makoto
Department of Analytical Chemistry of Medicines, Showa Pharmaceutical University
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Watanabe Makoto
Department of Industrial Chemistry, Chubu University
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Honda Tomohiko
Department of Industrial Chemistry, Chubu University
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Furuta Shinsaku
Department of Industrial Chemistry, Chubu University
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