Ferrous sulfate heptahydrate is the hydrated form of ferrous sulfate, which means it contains seven molecules of water (hepta- means seven). Its chemical formula is FeSO₄·7H₂O. This compound is commonly encountered as pale green crystals or granules. The heptahydrate form is often used in medicine as an iron supplement to treat iron deficiency anemia. It's also utilized in agriculture as a soil amendment to correct iron deficiencies in plants. Additionally, ferrous sulfate heptahydrate has applications in water treatment, dyeing processes, and as a mordant in textile industries.
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