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Hefei TNJ chemical industry co.,ltd

Country: China (Mainland)

Business Type:Trading Company

Ms.Sophia Zhang

Tel: +86-551-65418695

Ms.Rainie Wong

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Tel: 0086-551-67199489

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CAS 2809-21-4 HEDP 60% 90%

CAS NO.2809-21-4

  • Min.Order: 25 Kilogram
  • Payment Terms: L/C,D/A,D/P,T/T,MoneyGram
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Product Details

Keywords

  • 2809-21-4
  • HEDP 60%
  • 1-Hydroxyethylidene-1,1-diphosphonic acid

Quick Details

  • ProName: CAS 2809-21-4 HEDP 60% 90%
  • CasNo: 2809-21-4
  • Molecular Formula: C2H8O7P2
  • Appearance: colorless and clear liquid
  • Application: HEDP is used as scale and corrosion in...
  • DeliveryTime: within one week after payemnt confirme...
  • PackAge: HEDP liquid: 250Kgnet in plastic drum....
  • Port: Qingdao
  • ProductionCapacity: 2000 Metric Ton/Year
  • Purity: 50% 60% 90%
  • Storage: stored in cool and dry place
  • Transportation: by sea,by air,by express
  • LimitNum: 25 Kilogram
  • Grade: Industrial Grade,Pharma Grade
  • PH(1% solution): 1.5-2.0

Superiority

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.

Details

Specifications

Items

GB/T26324-2010

HG/T3537-2010

Appearance

Colorless to pale yellow transparent liquid

White powder solids

Active content (as HEDP), %       

50.0 min

60.0 min

90.0 min

Phosphorous acid (as PO33-), %   

2.0 max

2.0 max

0.80 max

Phosphoric acid  (asPO43-), %    

0.8 max

0.8 max

0.50 max

Chloride (as Cl-), ppm            

0.1 max

0.1 max

0.1 max

pH (1% solution)     

1.5-2.0

1.5-2.0

1.5-2.0

Density  (20°C), g/cm3                       

1.34 min

1.40 min

——

Active content (as HEDP·H2O), %

——

——

98.0 min

Calcium chelating value, mg/g  

450 min

500 min

800 min

Fe (as Fe3+), mg/L          

10 max

10 max

5 max

 

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