Tetrasodium Glutamate Diacetate Good Chelating Agent No known benefits Tetrasodium Glutamate Diacetate description Tetrasodium glutamate diacetate is a safe synthetic chelating agent with natural origins. Used in amounts up to 1% to boost the effectiveness of preservatives, allowing for the use of lower amounts than is typical without compromising effectiveness. Related ingredients: Tetrasodium EDTA