Food-grade phosphoric acid is a key ingredient widely used in the food and beverage industry for its multifunctional properties. This colorless, odorless liquid, derived from phosphate rock, serves various purposes, including acidity regulation, flavor enhancement, and preservation. As an acidulant, it imparts tartness to soft drinks, fruit juices, and other beverages, balancing sweetness and acidity. In addition, phosphoric acid acts as a sequestrant, chelating metal ions to prevent oxidation and discoloration in processed foods. Its antimicrobial properties contribute to food safety by inhibiting the growth of harmful bacteria and extending shelf life. Moreover, it plays a vital role in the production of certain food additives, such as phosphate salts and leavening agents, ensuring the quality and stability of numerous food products. With its versatility and functionality, food-grade phosphoric acid remains an essential ingredient in modern food processing, enhancing both taste and safety.