Ferrous sulfate

1. Industrially: ferrous sulfate is mainly used as a precursor to other iron compounds. It is a reducing agent, for the reduction of chromate in cement.

2. Colorant: Ferrous sulfate can also be used to stain concete and some limestones and sandstones a yellowish rust color.

3. Water Treatment: Ferrous sulphate has been applied for the purification of water by flocculation and for phosphate removal in municipal and industrial sewage treatment plants to prevent eutrophication of surface water bodies.