Sure Chemical Co., Ltd. Shijiazhuang
Main products:Food Additives,Pharmaceutical Raw Materials,Mining Chemicals,Concrete Admixtures,Water Treatment Chemicals
Contact Us
  • Contact Person : Ms. Li Selina
  • Company Name : Sure Chemical Co., Ltd. Shijiazhuang
  • Tel : 86-311-85697096
  • Fax : 86-311-85697098
  • Address : Hebei,shijiazhuang,Rm 3-2-02 5Fl, Federal Oriental Pearl Building,No.66, Zhaiying South Street,Shijiazhuang,Hebei,China
  • Country/Region : China
  • Zip : 050030

HEDP60%/98% (water tratment chemicals )

HEDP60%/98% (water tratment chemicals )
Product Detailed
HEDP powder 98% Molecular Formula C2H8O7P2 Molecular Weight 206.03 CAS Registry Number 2809-21-4

It can dissolve the oxidized materials on these metals’ surfaces. HEDP shows excellent scale and corrosion inhibition effects under temperature 250C. 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.


AppearanceColorless or light yellow transparent liquidWhite crystal powder
Active content(HEDP)%     58.0-62.090.0min
Phosphorous acid(as PO33-)%      2.0max0.5max
Phosphoric acid (asPO43 )%       0.8max0.5max
Chloride  (as Cl-)%                0.01max0.01max
pH(1% solution)      2max2max
Density (20C)g/cm31.40
Fe ion       ppm                10max20max
Colour APHA (Hazen)40max

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 requiredHEDP 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.

HEDP60%/98% (water tratment chemicals )

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