Calcium disodium ethylene diamine tetra-acetate is a derivative ethylenediaminetetraacetic acid and is an approved food additive. The calcium disodium ethylene diamine tetra-acetate (EDTA) is a chelating agent and is capable of removing heavy metal, which includes lead and mercury from the body. Calcium disodium ethylene diamine tetra-acetate is used to treat lead poisoning. Calcium disodium …