Ferrous Sulfate Heptahydrate

Ferrous sulfate heptahydrate, also known as iron(II) sulfate heptahydrate, is a chemical compound with the formula FeSO4·7H2O. It is a blue-green crystalline solid with a molecular weight of 278.02 g/mol. The “heptahydrate” designation indicates that each molecule of ferrous sulfate is associated with seven molecules of water.

This compound is commonly used in various industrial and agricultural applications. In agriculture, ferrous sulfate heptahydrate is utilized as a fertilizer to correct iron deficiencies in soil and plants, particularly in crops that require higher levels of iron for healthy growth, such as citrus fruits and ornamental plants. Additionally, it can be employed as a moss killer in lawns and gardens due to its ability to inhibit moss growth.

In industry, ferrous sulfate heptahydrate serves as a precursor for the production of other iron compounds, including iron oxide pigments, iron oxide nanoparticles, and ferric sulfate. It is also utilized in water treatment processes to remove phosphates and in the production of inks, dyes, and chemicals.

Ferrous sulfate heptahydrate should be handled with care as it can cause skin and eye irritation. It is typically supplied as a granular or powdered solid and must be stored in a dry environment to prevent deterioration.