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Page Views: 58 Date Added: 08/17/2008 Last Updated: 11/13/2008 Expiry Date: 08/15/2018 Description: 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP) Properties: HEDP is an organophosphoric acid corrosion inhibitor. HEDP can chelate with Fe, Cu, and Zn ions to form stable chelating compounds. HEDPcan dissolve the oxidized materials on these metals’ surfaces. HEDP shows excellent scale and corrosion inhibition effects under temperature 250℃. HEDP has good chemical stability under high pH value, hard to be hydrolyzed, and hard to be decomposed under ordinary light and heat conditions. Its acid/alkali and chlorine oxidation tolerance are better than that of other organophosphoric acids (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 antiscale and visible threshold effects. When built together with other water treatment chemicals, HEDP shows good synergistic effects. The solid state of HEDP is crystal powder, suitable for usage in winter and freezing districts. Because of its high purity, HEDP can be used as cleaning agent in electronic fields and as additives in daily chemicals. Specification: items index Appearance: Colorless or light yellow transparent liquid White crystal powder Active content (HEDP)% : 58.0-62.0 89.0 min Phosphorous acid (as PO33-)%: 2.0 max 0.5 max Phosphoric acid (asPO43- )%: 0.8 max 0.5 max Chloride (as Cl-)% : 0.01 max 0.01 max pH (1％ solution): 2 max 2 max Density (20℃)g/cm3: 1.40 - Fe ion ppm : 10 max 20 max Colour APHA (Hazen) :40 max - Usage: HEDP is 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, HEDP is used as detergent for metal and nonmetal. In dyeing industry, HEDP is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP is 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, HEDP is used together with polycarboxylic acid. Package and Storage: HEDP liquid: Normally In 250kg net Plastic Drum, IBC drum can also be used as required HEDP solid: 25kg inner liner polyethylene (PE) bag, outer plastic woven bag, or confirmed by clients. Storage for ten months in room shady and dry place. Safety Protection: Acidity, Avoid contact with eye and skin, once contacted, flush with water.　 Keywords: HEDP Related Products: 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP) Monosodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP•Na) Potassium salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP•Kx) Additional photos

Company Information (Shandong Taihe Water Treatment Co.,Ltd.)

Company Profile: The company was founded in 1998. It is one of the largest and professional water treatment chemicals factory in China, can manufacture all kinds of water treatment chemicals. The total yields reach to over 20,000 tons now. The product families include antiscalant, corrosion inhibitors, biocide agents, cleaning agents, pretreatment filming agents, chelating agents, dispersants, RO membrane chemicals and etc., covering wide ranges from single to complex agents. The products are widely used in industrial circulating water system, boiler and heating water system. Website URL: http://www.thwater.net Year Established: 1998 Products/Service: 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP) CAS No. 2809-21-4 Molecular Formula: C2H8O7P2 Molecular weight: 206.02 Propertiesof HEDP: HEDP is an organophosphoric acid corrosion inhibitor. HEDP can chelate with Fe, Cu, and Zn ions to form stable chelating compounds. HEDP can dissolve the oxidized materials on these metals' surfaces. HEDP shows excellent scale and corrosion inhibition effects under temperature 250 C. HEDP has good chemical stability under high pH value, hard to be hydrolyzed, and hard to be decomposed under ordinary light and heat conditions. Its acid/alkali and chlorine oxidation tolerance are better than that of other organophosphoric acids (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 antiscale and visible threshold effects. When built together with other water treatment chemicals, HEDP shows good synergistic effects. The solid state of HEDP is crystal powder, suitable for usage in winter and freezing districts. Because of its high purity, HEDP can be used as cleaning agent in electronic fields and as additives in daily chemicals. Specification of HEDP: Appearance Colorless or light yellow transparent liquid White crystal powder Active content (HEDP)% 58.0-62.0 89.0 min Phosphorous acid (as PO33-)% 2.0 max 0.5 max Phosphoric acid (asPO43- )% 0.8 max 0.5 max Chloride (as Cl-)% 0.01 max 0.01 max pH (1% solution) 2 max 2 max Density (20 C)g/cm3 1.40 - Fe ion ppm 10 max 20 max Colour APHA (Hazen) 40 max - Usage of HEDP: HEDP is 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, HEDP is used as detergent for metal and nonmetal. In dyeing industry, HEDP is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP is 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, HEDP is used together with polycarboxylic acid. Package and Storage of HEDP: HEDP liquid: Normally In 250kg net Plastic Drum, IBC drum can also be used as required HEDP solid: 25kg inner liner polyethylene (PE) bag, outer plastic woven bag, or confirmed by clients. Storage for ten months in room shady and dry place. Safety Protection of HEDP: Acidity, Avoid contact with eye and skin, once contacted, flush with water.　 Keywords: HEDP Related Products: 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP) Monosodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP.Na) Potassium salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP.Kx) Disodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP.Na2) Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP.Na4) HEDP,HEDP.Na,HEDP.Kx,HEDP.Na2,HEDP.Na4,1-Hydroxy Ethylidene-1,1-Diphosphonic Acid,Monosodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid,Potassium salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid,Disodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid,Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid

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