EDTA disodium salt dihydrate is widely used in various industries due to its chelating properties. In the food industry, it acts as a preservative by binding metal ions that can catalyze oxidation, thus preventing spoilage and maintaining flavor and color in products like canned foods and beverages. In medicine, it is employed as an anticoagulant in blood collection tubes, preventing clotting by chelating calcium ions. Additionally, it is used in chelation therapy to treat heavy metal poisoning by binding toxic metals like lead and facilitating their excretion from the body.

In water treatment, EDTA disodium salt dihydrate helps control water hardness by sequestering calcium and magnesium ions, preventing scale formation in boilers and pipelines. It is also utilized in cosmetics and personal care products to stabilize formulations by inhibiting metal-induced degradation of ingredients. In industrial cleaning, it effectively removes metal ion deposits from surfaces, enhancing the efficiency of cleaning agents. Its versatility makes it a valuable component in diverse applications.