Used in fertilizer production to provide phosphorus essential for plant growth. Commonly employed in food and beverage industry as an acidulant, especially in colas and processed cheeses, to add tartness and control pH. Serves as a rust remover and metal surface treatment agent by converting iron oxide into stable iron phosphate. Utilized in dentistry and orthodontics as an etching agent to prepare tooth surfaces for bonding. Applied in cleaning products for industrial equipment due to its ability to dissolve mineral deposits. Also functions as a pH adjuster in cosmetics, pharmaceuticals, and water treatment processes.