Used in fertilizer production to provide phosphorus, an essential nutrient for plant growth. Commonly applied in the manufacturing of diammonium phosphate (DAP) and other phosphate-based fertilizers. Serves as a flux in metal surface treatment, helping to remove oxidation during soldering and welding processes. Employed in food and beverage industry as an acidulant to provide tartness, especially in colas and processed cheeses. Helps control pH and acts as a preservative. Utilized in dental and orthodontic treatments to etch tooth surfaces, improving adhesion of fillings and sealants. Found in cleaning products for removing rust and scale from metals and equipment due to its ability to convert iron oxide into a phosphate coating. Used in pharmaceuticals as an excipient to adjust acidity and stabilize formulations.