Used as a source of iron in fertilizers to treat iron deficiency in plants, especially in chlorotic crops. Commonly applied in agriculture to improve soil iron content and enhance chlorophyll production. Widely used in water treatment to remove phosphates and as a coagulant aid in wastewater processing. Helps in the formation of flocs that trap impurities for easier removal. Serves as a precursor in the synthesis of iron-based chemicals and in the production of other iron salts. Used in the manufacturing of pigments, inks, and dyes for textiles and leather. Employed in the pharmaceutical industry as a dietary supplement to prevent and treat iron-deficiency anemia. Taken orally to support red blood cell formation. Acts as a reducing agent in various industrial chemical processes. Also used in the pickling of steel and in the preparation of mortar and concrete for historical restoration.