CAS Registry Number

CAS 7720-78-7 — Iron (ll) Sulfate

Iron(II) sulfate is a water-soluble iron salt commonly used in water treatment for iron removal, as a coagulant in wastewater, and in agricultural applications as a micronutrient fertilizer. It appears as a light green to blue-green crystalline solid in its hydrated forms, with varying water content. This chemical has a CAS number of 7720-78-7 and a molecular formula of FeSO₄ · XH₂O, where X typically ranges from 1 to 7, giving it a molecular weight of approximately 278.01 g/mol. It is safely stored at ambient conditions but requires careful handling, as indicated by its "Warning" signal word for potential hazards like oxidation or skin/eye irritation. Molekula supplies Iron(II) sulfate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.