Ferrous Sulphate Heptahydrate used in agriculture as fertilizers, herbicides and pesticides; Industrial for the manufacture of iron salt, ink, iron oxide red and indigo, used as mordant, tanning agent, water purifier, wood preservative and disinfectant.

Ferrous sulfate heptahydrate is widely used in industry, agriculture, medicine, food and other industries.

In industry, can be used for sewage wastewater treatment, seven water ferrous sulfate has good decolorization ability and flocculation effect, but also has the removal of heavy metal ions, oil, phosphorus, sterilization and other functions; Can be used in electroplating plant, ferrous sulfate heptahydrate as reducing agent used, the effect of co-precipitation of ferrite plating wastewater is obvious; Can be used for iron red factory, manufacturing magnetic iron oxide, iron oxide red and iron blue pigments and other raw materials.

In agriculture, ferrous sulfate heptahydrate can be used as a pesticide and fertilizer to prevent smut of wheat, scab of apples and pears, rot of fruit trees, and remove moss and lichen from tree trunks.

In medical food, ferrous sulfate heptahydrate can be used as local astringent and blood tonic agent, food iron fortification agent, iron nutrition supplement and fruit and vegetable hair color agent to keep the fresh color of pickled products.

Ferrous sulfate heptahydrate can be used as analytical reagent in experimental analysis.