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 to etch tooth surfaces for better adhesion of fillings and braces. Utilized in metal treatment processes for rust removal and as a conversion coating to improve paint adhesion. Also found in cleaning products for its ability to dissolve mineral deposits and scale. Plays a role in pharmaceuticals as an acidifier in some medications and in buffer solutions to maintain pH stability.