Disodium ethylenediaminetetraacetate is a colorless, odorless or slightly salty white or milky white crystalline or granular powder. As a food additive, it is widely used as a stabilizer, antioxidant, preservative and chelating agent. It can prevent discoloration, deterioration and turbidity caused by metal ions, and also enhance the antioxidant property of oils (the trace metals in oils such as iron and copper have the effect of promoting oil oxidation).