Potassium bismuthate

Potassium bismuthate Chemische Eigenschaften,Einsatz,Produktion Methoden

• Synthese

  A suspension of 165 g. of Bi2O3 in 1.5 liters of 50% potassium hydroxide is oxidized at the boiling point (as described above for NaBiO3) with small portions of Br2 (total 500 g.). A dark violet precipitate results. Now, an additional 500 ml. of hot 40% potassium hydroxide is added and the material is filtered after settling. The precipitate is washed with 40% potassium hydroxide, suspended in 3-5 liters of H2O, and agitated for a while. The liquid is decanted after some hours; the solid is washed with cold H2O and filtered. The bright red precipitate is dried over H2SO4 in a desiccator. The yield is 205 g. of KBiO3 ? 1/3 H2O. Formula weight (anhydrous) 296.1.
  Bi2O3 + 6KOH + 2Br2 = 2 KBiO3 + 4KBr + 3H2O.
  

Potassium bismuthate Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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