Disodium edetate dihydrate is widely used as a chelating agent in pharmaceutical, food, and cosmetic industries. It binds metal ions such as calcium, magnesium, iron, and copper, preventing them from catalyzing degradation reactions. In pharmaceuticals, it enhances the stability and shelf life of injectable solutions, especially antibiotics and cardiovascular drugs, by inactivating trace metal contaminants. It is also used in ophthalmic preparations to improve clarity and stability. In food products, it prevents oxidation and discoloration caused by metal ions, helping preserve flavor and appearance in items like salad dressings, canned vegetables, and beverages. In cosmetics and personal care products, it improves the effectiveness of preservatives and antioxidants by sequestering metals that can degrade active ingredients. It is also employed in water treatment and cleaning products to soften water by binding calcium and magnesium ions, enhancing the performance of detergents and surfactants. In some medical treatments, it supports heavy metal detoxification, although this use is less common and typically involves other forms of EDTA.