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| Section2 = | Section3 = | Section8 = }} Sodium tetrafluoroborate is an inorganic compound with formula NaBF4. It is a salt that forms colorless or white water-soluble rhombic crystals and is soluble in water (108 g/100 mL) but less soluble in organic solvents. Sodium tetrafluoroborate is used in some fluxes used for brazing and to produce Boron trifluoride. ==Preparation== Sodium tetrafluoroborate can be prepared by neutralizing tetrafluoroboric acid with sodium carbonate or sodium hydroxide. :NaOH + HBF4 → NaBF4 + H2O :Na2CO3 + 2 HBF4 → 2 NaBF4 + H2O + CO2 Alternatively the chemical can be synthesized from boric acid, hydrofluoric acid, and sodium carbonate: :2H3BO3 + 8HF + Na2CO3 → 2NaBF4 + 7H2O + CO2 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 tetrafluoroborate」の詳細全文を読む スポンサード リンク
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