Clear HEDP Chemical Organophosphoric Acid Scale Inhibitor High Efficiency

Basic Information
Place of Origin: China
Brand Name: YXCHEM
Certification: ISO9001
Model Number: HEDP
Minimum Order Quantity: 1mts
Price: Negotiation
Packaging Details: 290kg/Drum
Delivery Time: 30-45days
Payment Terms: D/A, L/C, D/P, T/T, Western Union
Supply Ability: 2000MTS per month
Detail Information
Appearance: Clear, Colorless To Pale Yellow Aqueous Solution Active Content (HEDP)%: 60.0 Min
Phosphorous Acid (as PO33-) %%: 2.0 Max Phosphoric Acid(as PO43- )%: 0.8 Max
PH (1% Water Solution): 2.0 Max
High Light:

etidronic acid


cas 2809-21-4

Product Description

Water treatment chemicals 1-diphosphonic acid (HEDP) an organophosphoric acid corrosion inhibitor


Product Name: HEDP

Synonyms: 1-Hydroxyethylidene-1,1-diphosphonic acid; HEDPA

CAS NO: 2809-21-4

Molecular Structure: C2H8O7P2

Hazard Class: 8

Min Order Qty: 1mts

Qty in 20' FCL: 23.2mts

Certificate: ISO9001:2008,

Packing Details: 290kg/Drum

Delivery Time: 30-45 days

Supply Ability: 2000MTS per month

HS Code: 2942000000



Commodities Name

1-Hydroxy Ethylidene-1,1-Diphosphonic Acid(HEDP)

Appearance Clear, Colorless to pale yellow aqueous solution White crystal powder
Active content (HEDP)% 60.0 min 90.0 min
Active content (HEDP·H2O) % - 98.0 min
Phosphorous acid (as PO33-) % 2.0 max 0.8 max
Phosphoric acid (as PO43- )% 0.8 max 0.5 max
Chloride (as Cl-) % 0.02 max 0.01 max
pH (1% water solution) 2.0 max 2.0 max
Density (20℃)g/cm3 1.40 min -
Fe, mg/L 20.0 max 10.0 max
Ca sequestration (mg CaCO3/g) 500.0 min  


Product description:

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.


  1. It can be used in cooling water systems, pipelines and boiler scale, it can be as high hardness, high salinity and other water quality is poor oil pipeline inhibitors.
  2. It can be used for cooling water, boiler water, oilfield water treatment scale inhibitor and corrosion inhibitor
  3. It can be used for circulating cooling thermal power plants, refineries.



  1. What kinds of certificates can you offer?
    YuXiang Chemical is an ISO2008 9001 certified company, as for HEDP

  2. Is Yuxiang Chemical a manufacturer or a trading company?
    Yuxiang chemical is a group company with its own production base located in Jiangsu and Zhejiang province. For more than 20 years' development, Yuxiang also joins up with several local plants to evaluate some special chemicals including R&D, production process and sales strategy.

  3. What is your advantage on HEDP?
    More than 10 years’ experience in supplying 
    HEDP to world market with competitive prices and stable supply.

  4. How long shall we wait for your reply?
    We can guarantee to reply your inquiries in less than 24 hours in working days.

  5. Can we get some samples for interesting chemicals?
    Yes. We can provide testing samples after receiving from the customers detailed inquiries as well as COA confirmed.

  6. Are your payment terms negotiable?
    Yes. Our payment terms are negotiable according to different trading conditions. We’ll always try our best to satisfy the customers for both benefit.

  7. Do you accept long term contract? For example, one year.
    Most of the chemicals’ prices changes from time to time but some are stable. We can discuss individually and see what we can do for you.


Clear HEDP Chemical Organophosphoric Acid Scale Inhibitor High Efficiency 0

Contact Details

Phone Number : +8613524790234