Ferrous sulphate heptahydrate also known as Iron(II) sulfate heptahydrate is the chemical compound with the formula FeSO₄.7H₂O. It is blue-green crystals.It has a role as a reducing agent.
Iron(2+) sulfate heptahydrate is a hydrate that is the heptahydrate form of iron(2+) sulfate. It is used as a source of iron in the treatment of iron-deficiency anaemia.It is a hydrate and an iron molecular entity. It contains an iron(2+) sulfate (anhydrous).