Keywords: EDTA-from-xtal-1972-3D-balls.png Ball-and-stick model of the EDTA molecule as found in the crystal structure Colour code Carbon C grey-black Hydrogen H white Nitrogen N blue Oxygen O red Structure by X-ray crystallography from http //dx doi org/10 1107/S056774087200319X Acta Cryst B 1972 28 781 “785 Image generated in http //accelrys com/products/discovery-studio/visualization/discovery-studio-visualizer html Accelrys DS Visualizer Own 2011-02-11 Ben Mills Benjah-bmm27 Images by Ben Mills EDTA |