EDTA, Disodium Salt, Dihydrate (Ethylenediaminetetraacetic acid disodium dihydrate) is a metal ion chelator used as a protease inhibitor.EDTA, Disodium Salt, Dihydrate is a molecule that is ineffective against cellulase activity and is widely used in protein purification.EDTA, Disodium Salt, Dihydrate promotes the excretion of cellulase by binding to the metals and promotes their excretion.