Iron (II) sulphate or ferrous sulphate is the chemical compound with the formula FeSO4, known since ancient times as copperas. It is most commonly encountered as the blue-green heptahydrate. Iron sulphate has many uses:
Uses of Ferrous Sulphate
- It is used as a lawn conditioner and moss killer. More Info
- Industrially, ferrous sulphate is mainly used as a precursor to other iron compounds.
- It is a reducing agent, mostly for the reduction of chromate in cement.
- Used in the manufacture of inks.
- It is used a mordant for wool dyeing.
- Ferrous sulphate can also be used to stain concrete and some lime stones and sandstones a yellowish rust colour.
- Woodworkers use ferrous sulphate solutions to colour maple wood a silvery hue.
- In horticulture it is used for treating iron chlorosis (yellowing of foliage caused by iron deficiency). Although not as rapid-acting as iron chelate, its effects are longer-lasting. It can be mixed with compost and dug into to the soil to create a store which can last for years.
- Ferrous sulphate is sometimes added to the cooling water flowing through the brass tubes of a turbine condenser. It forms a corrosion-resistant, protective coating on the inside of the tube.
- It 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.
- It is used as a traditional method of treating wood panel on houses, either alone dissolved in water or as a component of water-based paint.