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  • HEDP
       
  Post Time： 2008-09-05  
  Expiry Date： 2009-08-31  
  Category： > Energy > Water Treatment  
  Keywords： Water  Treatment  Chemical  corrosion  inhibitors    
  • Details
  • 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)
    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 g/cm3 1.40 -
    Fe ion ppm 10 max 20 max
    Colour APHA (Hazen) 40 max -

    e-mail: export@thwater.com
    Website: http://www.th-chem.com
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  • Contact Details
Company Name︰ Shandong TAIHE water treatment Co., Ltd.  
Company Address︰ Xiwangzhuang Town, Shizhong District  
Tel︰ 086-0632-5113066  
Fax︰ 086-0632-3460156  
Contact︰ Amy Sun ( )  
Mobile︰ 086-013963261506  
websie︰  
         
  • Copmany Name: Shandong TAIHE water treatment Co., Ltd.   Contact: Amy Sun
  • Address: Xiwangzhuang Town, Shizhong District
  • TeL: 086-0632-5113066   Fax: 086-0632-3460156
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