1.HEDP:60%, the same with dequest 2010. 2.Cooling ,boiler,cleanes,swimming pool water treatmen. 3.NSF, EMS ISO certificate Chemical name:1-Hydroxyethylidene-1,1-Diphosphonic Acid(HEDP) Abbreviation: HEDP(dequest 2010)Molecular Formula: C2H8O7P2Molecular Weight: 206 CAS Number: 2809-21-4 Application Notes: HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn ...