Used in fertilizer production to provide phosphorus essential for plant growth. Commonly employed in food and beverage industry as an acidulant in soft drinks to provide tart flavor and pH control. Utilized in dentistry and orthodontics for etching teeth to improve adhesion of bonding materials. Serves in metal surface treatment for rust removal and conversion coating to enhance paint adhesion. Applied in cleaning products for industrial and household use due to its ability to dissolve mineral deposits. Also used in pharmaceuticals as an acidifier or buffering agent in various formulations.