Used as a pigment in paints, coatings, and construction materials due to its stable red-brown color and resistance to UV light. Commonly found in rust-proof primers and anti-corrosion coatings for metal surfaces. Employed in the production of ceramics and glass to impart color and improve durability. Acts as a polishing agent for optical lenses and magnetic tapes. Utilized in the pharmaceutical industry as an additive in tablets and as a component in iron supplements. Also used in water treatment processes to remove impurities and in some types of catalysts for industrial chemical reactions.