EDTA disodium salt, also known as sodium ethylenediaminetetraacetate (Na2EDTA), is a versatile chelating agent that binds to metal ions like calcium, magnesium, and iron through its four carboxylate and two amine groups. Widely used in industrial, medical, and research applications, it serves as a food and beverage preservative, a pharmaceutical stabilizer, a water treatment agent, and a biochemical research reagent. EDTA disodium salt is also investigated for its potential therapeutic effects on heavy metal poisoning and cardiovascular diseases.