Used in agriculture as a key component in the production of phosphate fertilizers to enhance plant growth and root development. Commonly applied in the food industry as an acidulant in soft drinks and processed foods to provide tartness and act as a preservative. Employed in dentistry and orthodontics for etching teeth to improve adhesion of fillings and braces. Utilized in metal treatment processes for rust removal and phosphating steel to prevent corrosion. Serves as a cleaning agent in household and industrial detergents due to its ability to dissolve mineral deposits. Also used in pharmaceuticals as an excipient or active ingredient in dental cements and medications for calcium regulation.