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 preserve freshness. Employed in dentistry and orthodontics for etching teeth to improve adhesion of fillings and braces. Utilized in metal surface treatment to remove rust and prepare surfaces for painting or coating. Serves as an electrolyte in certain types of fuel cells and batteries. Widely used in cleaning products for industrial equipment due to its ability to dissolve mineral deposits and scale.