 More ... Product Description Water treatment industrial HEDP 90% powderCAS NO.: 2809-21-4
EINECS No.: 220-552-8
Molecular formula: C2H8O7P2
RIDADR: UN 3265/1 8/PG III
Molecular Weight: 206.02Description of Water treatment industrial HEDP 90% powderHEDP 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.SpecificationItems60% Liquid HEDP90% Crystal powder HEDP AppearanceClear, Colorless to pale yellow aqueous solutionWhite crystal powder Active content (HEDP)%58.0-62.090 min Active content (HEDP·H2O)%-98 min Phosphorous acid (as PO3 3-)%1.0 max0.8 max Phosphoric acid (as PO4 3- )%0.6 max0.5 max Chloride (as Cl -) ppm100 max50 max pH (1% solution) 2.02.0 Density (20°C)g/cm3 1.43-1.47- Fe, mg/L10 max5.0 max Colour APHA (Hazen)30 max - Acetic acid %0.5 max - Ca sequestration (mg CaCO3/g)500 min - Application The application of Water treatment industrial HEDP 90% powder:HEDP is widely used as scale and corrosion inhibitor in industrial circulating cooling water systems of electric power, chemical industry, metallurgy, chemical fertilizer, and also in medium or low pressure boilers, oilfield water injection and oil pipeline.
Besides these applications, HEDP can also be used as cleaning agent of metal and nonmetal in the textile industry, as peroxide stabilizer and fixing agent in bleaching and dyeing industry, as complexing agent in cyanide free electroplating industry, as the carrier of radioactive elements in pharmaceutical industry, and so on.Packing&Shipping The package of Water treatment industrial HEDP 90% powder:
25KGS/PP+PE, 25KGS kraft bag or customized packing.250kg plastic drum,  Less ... |
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