Tetrasodium glutamate diacetate is an organic salt synthesized from glutamic acid (an amino acid abundant in nature). It usually appears as an odourless white powder that is soluble in water, and is used as a multi-purpose, clear, liquid chelating agent and preservative booster.

Tetrasodium glutamate diacetate is what's known as a 'chelating agent', an ingredient that inactivates metallic ions (charged particles) in product formulations. Free roaming iron and copper ions in formulations can lead to rapid oxidation, meaning they will spoil quickly. Using a chelating agent helps to slow this process, allowing for the creation of products with improved stability and appearance. This also improves the effectiveness of preservative ingredients, allowing us to use a lower percentage of these, for safer shelf-stable products.

Other names: C₉H₁₃NO₈Na₄, L-Glutamic acid, N,N-Bis(Carboxymethyl)-, Tetrasodium Salt