Ferric iodate, Fe₂O₃.I₂O₅

Ferric iodate, Fe₂O₃.I₂O₅, is obtained as a brown precipitate on mixing hot solutions of an alkali iodate and a ferric salt. Small crystals may be prepared by addition of an acid solution of iron in nitric acid to sodium iodate. The precipitate first formed readily dissolves, and upon concentration of the solution the salt crystallises out. It is stable in air at ordinary temperatures, but decomposes when heated.