Used in fertilizers to provide phosphorus, an essential nutrient for plant growth. It plays a key role in the production of phosphate-based agricultural supplements. Commonly used in food and beverages as an acidulant to add tartness, especially in soft drinks like colas. Serves as a rust remover and metal cleaner by converting iron oxide into a phosphate coating that can be easily removed. Used in dentistry and orthodontics to etch tooth surfaces, improving adhesion of fillings and sealants. Acts as a pH adjuster in various industrial and consumer products, including detergents and cosmetics. Employed in the semiconductor industry for wet etching processes involving silicon and other materials.