Citric acid trisodium salt is widely used as a buffering agent in the food and beverage industry to regulate acidity and enhance flavor stability. It is commonly added to carbonated drinks, powdered mixes, and dairy products to maintain a consistent pH level. In pharmaceuticals, it serves as an anticoagulant in blood collection tubes, preventing clotting by chelating calcium ions. Additionally, it is employed in cleaning products as a water softener and descaling agent, effectively removing mineral deposits from household appliances. In cosmetics, it acts as a pH adjuster and preservative, ensuring product stability and skin compatibility. Its chelating properties also make it useful in industrial applications for metal cleaning and treatment processes.