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| Section2 = }} Sodium decavanadate (Na6()) is an inorganic compound. It is the sodium salt of the decavanadate anion, ()6−. Decavanadate is unique among vanadates in that it forms an orange aqueous solution. Numerous decavanadate salts and derivatives have been isolated and studied since 1956 when it was first characterized. ==Preparation== The preparation of decavanadate is achieved by acidifying an aqueous solution of vanadate.〔 :10 Na3()·nH2O + 24 HOAc → Na6()·18 H2O + 24 NaOAc The formation of decavanadate is optimized by maintaining a pH range of 4–7. The product can be purified with recrystallization in water. This synthesis avoids the introduction of foreign cations, except H+. Otherwise, a variety of mixed-cation decavanadates will form. Typical side products include metavanadate, ()−, and hexavanadate, ()2−, ions.〔 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「Sodium decavanadate」の詳細全文を読む スポンサード リンク
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