Used as an anticoagulant in blood collection tubes by binding calcium ions, preventing clotting during medical testing. Commonly found in dialysis solutions to control pH and act as a buffer. Employed in food and beverages as an acidity regulator and emulsifier, especially in processed cheeses to improve texture and melting properties. Utilized in pharmaceutical formulations to enhance solubility and stability of certain drugs. Also serves as a buffering agent in laboratory procedures and diagnostic reagents.