Bismuth Trioxide or Bismuth Sesquioxide, Bi2O3, is begin by itself as bismuth ochre. It is the artefact pbtained if bismuth burns in air ("flores bismuti"), or if beef is addle by brownish bismuth at white heat.
It is usually acquired by the abiding heating of aqueous bismuth in air, or by the activity of calefaction aloft the carbonate, sulphate or basal nitrate. Bismuth monoxide if acrimonious in air yields the trioxide.
The apparent anatomy is acquired by melting the delicate anatomy with potassium hydroxide, by baking the hydroxide with potassium or sodium hydroxide, by the activity of potassium cyanide on a nitric acerbic band-aid of bismuth nitrate, or by abacus sodium nitrate intermittently to a aqueous admixture of sodium hydroxide, bismuth and potassium chromate at 350° C. The oxide is aswell acquired if chlorine is anesthetized into a alloyed admixture of bismuth and argent nitrate.
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