EDTA calcium disodium dihydrate, C10H14N2Na2O8 · 2H2O, is a chelating agent used to sequester metal ions in aqueous solution.
Chelating agents are important in the field of soap, detergents, textile dyeing, water softening, metal finishing and plating, pulp and paper, enzyme deactivation, photo chemistry, and bacteriocides.
Dissolvine E-Ca-10 is added to some food as a preservative or stabilizer to prevent catalytic oxidative decoloration, which is catalyzed by metal ions. 
In soft drinks containing ascorbic acid and sodium benzoate, EDTA mitigates formation of benzene, a carcinogen. In personal care products, it is added to cosmetics to improve their stability toward air.
