Tetrahydroxypropyl Ethylenediamine Good Chelating Agent No known benefits Tetrahydroxypropyl Ethylenediamine description Tetrahydroxypropyl ethylenediamine is a chelating agent that binds with metal ions or metallic compounds, preventing them from adhering to a surface (such as skin, hair, or clothing) or causing contamination, such as in the case of trace amounts of iron.