Molecular Formula: C2H8O7P2
Molecular Weight: 206
CAS Number: 2809-21-4
HEDP (similar to Dequest 2010) can chelate with Fe, Cu, Al, Zn etc. metal ions and form stable chelatingcompounds and dissolve the oxidized materials on metals' surfaces. It is soluble with water, showsexcellent scale and corrosion inhibition effects under temperature 200°C and has good chemical stabilityunder high pH value, hard to be hydrolyzed , and hard to be decomposed under ordinary light and heatconditions. Its acid/alkali and chlorine oxidation tolerance are better than that of other organophosphorusacids (salt). HEDP can react with metal ions in water system to form hexa-element chelating complex,with calcium ion in particular. Therefore, HEDP has good antiscalant and visible threshold effects. Whenbuilt together with other water treatment chemicals, it shows good synergistic effects.The crystal powder of HEDP with high content, suitable for usage in winter and freezing districts.Because of its high purity, it can be used as cleaning agent in electronic fields and as additives in dailychemicals.
1) In circulating cool water system: as scale and corrosion inhibitor.
2) In oil field and low-pressure boilers: as scale and corrosion inhibitor.
3) In light woven industry: as detergent for metal and nonmetal.
4) Dyeing: as peroxide stabilizer and dye-fixing agent.5) In non-cyanide electroplating: as chelating agent.6) RO system: as scale inhibitor.
Specification: Low Arsenic & Low Heavy metal
Package and Storage:
HEDP Liquid: Normally in 200L HDPE drum, 1000L IBC or ISO TANK.HEDP Powder: 25kg inner liner polyethylene (PE) bag or 1000kg woven bag.Storage for 12 months in room shady and dry place.
Acidity, avoid contact with eye and skin, once contacted, flush with plenty water.
1-Hydroxy Ethylidene-1,1-Diphosphonic Acid;
Hydroxyethylidene Diphosphonic acid(HEDP);
Оксиэтилидендифосфоновая кислота(ОЭДФ -кислота )
1-Hydroxy Ethylidene-1,1-Diphosphonic Acid
Monosodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP.Na)