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 conversion coating to protect steel surfaces from corrosion. Serves as a pH adjuster in cosmetics, cleaning agents, and pharmaceuticals. Also used in laboratory settings as a buffer and reagent in analytical procedures.