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Page Views: 29 Date Added: 11/29/2008 Last Updated: 11/29/2008 Expiry Date: 11/27/2018 Description: Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP•Na4) CAS No.: 29329-71-3 (x-Na), 3794-83-0 (4-Na) Molecular Formula: C2H4O7P2Na4 Molecular weight: 294 Structural Formula: Properties: HEDP•Na4 is the sodium salt of HEDP, HEDP•Na4 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 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 oxides on metal surface, it has good scale and corrosion inhibition effect under 250℃. HEDP•Na4 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, HEDP•Na4 is used as detergent for metal and nonmetal. In dyeing industry, HEDP•Na4 is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP•Na4 is used as chelating agent. Specification: items index Appearance White powder Colorless to light yellow transparent liquid Active component (HEDP)% 56.0 min 20.3-21.7 Active component (HEDP•Na4)% 79.9 min 29.0-31.0 Total phosphoric acid (as PO43-) % 52.0-54.0 18.4-20.4 Fe ppm 35.0 max 20 max Dry weight loss % 15 max -- density (20℃)g/cm3 -- 1.26-1.36 PH 11.0-12.0 (1% water solution) 10.0-12.0 (as it) Package and Storage: For liquid: Normally In 250kg net Plastic Drum, IBC drum can also be used as required. For solid: 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: Weak acidity, Avoid contact with eye and skin, once contacted, flush with water.　 Keywords: HEDP·Na4 China,Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid Related Products: Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP•Na4) Potassium salt of 1-HydroxyEthylidene-1,1-Diphosphonic Acid (HEDP•Kx) 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP) Additional photos

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

Company Profile: HEDP (1-Hydroxy Ethylidene-1,1-Diphosphonic Acid) CAS No. 2809-21-4  HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn ions to form stable chelating compounds.It can dissolve the oxidized materials on these metals’ surfaces. HEDP shows excellent scale and corrosion inhibition effects under temperature 250centigrade. 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, it 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, it can be used as cleaning agent in electronic fields and as additives in daily chemicals. Specification: 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 (20centigrade): 1.40 g/cm3 - 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. Shandong Taihe Water Treatment Co., Ltd. Xiwangzhuang town, Shizhong district, Zaozhuang city, Shandong Province, P. R. China Tel:+86-632-5113066 Fax:+86-632-5112055 Contacted person: Eric Lee 86-15966754320 E-Mail: lee@thwater.com Website: http://www.watertreatmentchemical.us http://www.watertreatmentchemical.ru http://www.watertreatmentchemical.tw http://www.watertreatmentchemical.hk http://www.watertreatmentchemical.in http://www.thwater.net http://www.hedp.de http://www.hedp.us http://www.hedp.in http://www.hedp.be http://www.Hedp.ca http://www.HEDP-NA4.ca http://www.hedp-na4.be http://www.hedp-na4.in http://www.hedp-na4.us 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 Structural Formula: Properties: HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn ions to form stable chelating compounds.It can 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, it 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, it 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)

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