Iron sulfate From Wikipedia the free encyclopedia Iron sulfate may refer to: Ferrous sulfate, Iron(II) sulfate, FeSO4 Ferric sulfate, Iron(III) sulfate, Fe2(SO4)3 Index of chemical compounds with the same nameThis set index article lists chemical compounds articles associated with the same name.If an internal link led you here, you may wish to change the link to point directly to the intended article.