... 1,1-Diphosphonic AcidProperties:Dequest 2016 is the sodium salt of Dequest 2010, HEDP·Na4 is an good scale inhibitor for ... The solid HEDP·Na4 is white powder, soluble in water, easily deliquescence, suitable for use in winter and freezing districts. It is a kind of ... organophorphonic acid scale and corrosion inhibitor, can form stable complex with Fe, Cu and Zn ions, it can dissolve the ...