Anhydrous ferrous sulfate is a white to light grey powder or crystal, odorless, hygroscopic and readily oxidizable. Its aqueous solution is acidic and reductive. It is a commonly used iron salt raw material in industry, water treatment, feed and agriculture.

1. Wastewater treatment: flocculation, phosphorus removal, reduction of hexavalent chromium
2. Industry: production of iron salts, iron oxide pigments, ink, mordants
3. Agriculture: iron fertilizer, prevention and control of iron deficiency chlorosis in plants
4. Feed additive: iron supplementation for livestock and poultry
5. Reducing agent, preservative