Ningbo Samreal Chemical Co., Ltd.  

Product Name: 60% 90% HEDP 1-Hydroxyethylidene-1, 1-Diphosphonic Acid CAS 2809-21-4 Model NO.: HEDP Type: Industrial Circulating Water Treatment Agent Appearance: Liquid Color: Colorless Environmental Protection: Yes Certification: REACH, ISO Acid-base Property: Acidic Surface Disposal Agent EINECS: 220-552-8 Formula: C2h8o7p2 CAS No.: 2809-21-4 Other Name: 1-Hydroxyethylidene-1, 1-Diphosphonic Acid Character: Colorless Liquid Stock: Yes HS: 2931399090 Trademark: SAMREAL Transport Package: Drum Specification: 250kg, 1000kgs Origin: China HS Code: 2931399090 Product Description 1-Hydroxyethylidene-1,1-diphosphonic acid [2809-21-4]IdentificationName1-Hydroxyethylidene-1,1-diphosphonic acidSynonyms1-Hydroxyethane-1,1-diphosphonic acid; 1-Hydroxyethylidenedi(phosphonic acid); Dequest 2010; Etidronic acid; HEDPMolecular StructureMolecular FormulaC2H8O7P2Molecular Weight206.03CAS Registry Number2809-21-4EINECS220-552-8PropertiesDensity1.45 (60% aq.)Specification:ItemsIndexAppearanceClear, Colorless to pale yellow aqueous solutionWhite crystal powderActive content (HEDP)%60.0 min90.0 minActive content (HEDP·H2O)%-98.0 minPhosphorous acid (as PO33-)%2.0 max0.8 maxPhosphoric acid (as PO43-)%0.8 max0.5 maxChloride (as Cl-)%0.02 max0.01 maxpH (1% water solution)2.0 max2.0 maxDensity (20ºC)g/cm31.40 min-Fe, mg/L20.0 max10.0 maxCa sequestration (mg CaCO3/g)500.0 minUsage:HEDPis used as scale and corrosion inhibition in circulating cool water system, oil field and low-pressure boilers in fields such as electric power, chemical industry, metallurgy, fertilizer, etc.. In light woven industry,HEDPis used as detergent for metal and nonmetal. In dyeing industry,HEDPis used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating,HEDPis used as chelating agent. The dosage of 1-10mg/L is preferred as scale inhibitor, 10-50mg/L as corrosion inhibitor, and 1000-2000mg/L as detergent. Usually,HEDPis used together with polycarboxylic acid.Package and Storage:HEDPliquid: 200L plastic drum,IBC(1000L),customers' requirement.HEDPsolid: 25kg/bag,customers' requirement.Storage for twelve months in room shady and dry place.Safety Protection:Acidity, Avoid contact with eye and skin, once contacted, flush with water.