potassium hydroxide in potassium hydroxide addition of BiI3 to very diluted aq. KOH forming BiOI and impurities of Bi2O3 or addition to more concentrated aq. KOH forming pure Bi2O3; addition of an excess of BiI3 to for pure BiOI;;
参考文献
Bull. Soc. chim. France (4), , vol. 53, p. 1104 - 1106