Used as an anticoagulant in blood collection tubes by binding calcium ions, preventing clotting for accurate lab testing. Commonly found in diagnostic procedures like blood typing and coagulation studies. Also serves as a buffering agent in pharmaceuticals to maintain stable pH. In food and beverages, it acts as an emulsifier and preservative, especially in processed cheeses and soft drinks. Additionally, used in effervescent formulations and as a urine alkalizer in medical treatments.