60% Liquid or 98% crystal HEDP 1-Hydroxyethylidene-1,1-diphosphonic acid// CAS: 2809-21-4

Properties:
is the sodium salt of HEDP, is an good scale inhibitor for calcium carbonate, it can be used in low pressure boiler water system, circulating water system, industrial and municipal cleaning water system and swimming pool.
The solid 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 oxides on metal surface, it has good scale and corrosion inhibition effect under 250℃.
is widely used in circulating cool water system, medium and low pressure boiler, oil field water pipelines as scale and corrosion inhibitor in fields such as electric power, chemical industry, metallurgy, fertilizer, etc.. In light woven industry, is used as detergent for metal and nonmetal. In dyeing industry, is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, is used as chelating agent.Specification: ItemsIndexAppearanceColorless to yellowish transparent liquidWhite powderActive content (HEDP)%20.3-21.760.0 minActive content (HEDP•Na4)%29.0-31.085.0 minTotal phosphoric acid (as PO43-)%18.4-20.455.0 minFe, mg/L20.0 max35.0 maxMoisture,%--9.0 maxDensity (20℃)g/cm31.26-1.36--PH (1% water solution)10.0-12.011.0-12.0Package and Storage:
Liquid: 200L plastic drum, IBC(1000L), customers' requirement.
Solid: 25kg/bag, customers' requirement. Storage for ten months in shady room and dry place.Safety Protection:
Weak acidity, Avoid contact with eye and skin, once contacted, flush with water.Synonyms:
Tetrasodium (1-hydroxyethylidene)bisphosphonate