15244-10-7

YELLOW-GREEN CRYSTALLINE POWDER

Iron(III) sulphate finds uses as a mordant and in the preparation of iron(III) alum and Prussian blue.

ChEBI: Iron(3+) sulfate hydrate is a hydrate that is the monohydrate form of iron(3+) sulfate. It has a role as a mordant, a catalyst and an astringent. It contains an iron(3+) sulfate.

Anhydrous Fe2(SO4)3 is obtained as an almost white powder by boiling anhydrous iron(II) sulphate with concentrated sulphuric acid or by careful heating of the hydrated salt. Solutions of iron(III) sulphate prepared, for example, by oxidizing solutions of iron(II) sulphate with nitric acid yield a series of hydrates upon crystallization; the common hydrates have 12, 9 (the common, violet crystals), 6 and 3 molecules of water. When thermally decomposed, iron (III) oxide and sulphur trioxide are formed :
Fe2(SO4)3→Fe2O3+3SO3