Properties of HEDP(1-Hydroxy Ethylidene-1 1-Diphonic Acid) 2809-21-4:
HEDP(1-Hydroxy Ethylidene-1 1-Diphonic Acid) 2809-21-4 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(1-Hydroxy Ethylidene-1 1-Diphonic Acid) 2809-21-4 shows excellent scale and corrosion inhibition effects under temperature 250°C. HEDP(1-Hydroxy Ethylidene-1 1-Diphonic Acid) 2809-21-4 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(1-Hydroxy Ethylidene-1 1-Diphonic Acid) 2809-21-4 can react with metal ions in water system to form hexa-element chelating complex, with calcium ion in particular. Therefore, HEDP(1-Hydroxy Ethylidene-1 1-Diphonic Acid) 2809-21-4 has good antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects.
 
Specification of HEDP(1-Hydroxy Ethylidene-1 1-Diphonic Acid) 2809-21-4:
Appearance Colorless to Light Yellow Transparent Liquid
Active Content (HEDP)% 58.0-62.0
Phosphorous Acid (as PO33-)% 1.0 Max
Phosphoric Acid  (asPO43- )% 0.5 Max
Chloride (as Cl-)% 0.3 Max
PH (1% Solution) 2 Max
Density  (20°C)g/cM3 1.40 Min
 
Usage of HEDP(1-Hydroxy Ethylidene-1 1-Diphonic Acid) 2809-21-4: 
1. HEDP(1-Hydroxy Ethylidene-1 1-Diphonic Acid) 2809-21-4 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..
2. In light woven industry, HEDP(1-Hydroxy Ethylidene-1 1-Diphonic Acid) 2809-21-4 is used as detergent for metal and nonmetal.
3. In dyeing industry, HEDP(1-Hydroxy Ethylidene-1 1-Diphonic Acid) 2809-21-4 is used as peroxide stabilizer and dye-fixing agent.
4. In non-cyanide electroplating, HEDP(1-Hydroxy Ethylidene-1 1-Diphonic Acid) 2809-21-4 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(1-Hydroxy Ethylidene-1 1-Diphonic Acid) 2809-21-4 is used together with polycarboxylic acid.
 
Package and Storage of HEDP(1-Hydroxy Ethylidene-1 1-Diphonic Acid) 2809-21-4:
HEDP(1-Hydroxy Ethylidene-1 1-Diphonic Acid) 2809-21-4: Normally in 250kg net Plastic Drum, IBC Drum can also be used as required.

Storage for ten months in shady room  and dry place.
Safety Protection & Factory of HEDP(1-Hydroxy Ethylidene-1 1-Diphonic Acid) 2809-21-4:
Acidity, Avoid contact with eye and skin, once contacted, flush with plenty of water immediately, if necessary, go to hospital for medical help.

Our factory has a rigorous quality-control in the whole manufacturing process and a discreet quality-inspection after production so as to ensure a good and satisfactory quality of products before they flow into the market.
Some photos of our factory and labs will be showed as follows:

 250kgs Plastic Drum; 1,250kgs IBC Drum; 25mt ISO Tank or to be discussed

Biddle Sawyer Fortune Chem ( Asian Sales Division of Biddle Sawyer New York ) sells proven
quality of  1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP) on a regular basis.

Contact Point :
Mr.  S. M. Kang, CEO
Mr.  Jingu Kang, Manager

Tel : 82-(0)51-701-9121
Fax : 82-(0)51-701-9125

Please click “ CONTACT SUPPLIER “ above so that we may reply therein or inform you the person in charge name and his/her email address and company website.

All Payment including shipping documents procedure and strict quality management to be done by Biddle Sawyer New York in cooperation with very well-trained ( including TBM : Time Based Management ) Biddle Sawyer’s overseas offices and affiliations

Custom Manufacturing and Development Capabilities
R&D at 6 labs (affiliate or contract)
~350 Chemists at 6 facilities in USA, China, Korea, Taiwan, India and Finland
~40 PhD's, ~120 M.S.; External consultants welcomed
~400 combined hoods
Up to 100L vessels in labs

Development Services
Tech Transfer
Process R&D
Analytical Development
Custom Synthesis; FTE
Kilo lab production
 
Analytical Equipment
LC's GC's LC/MS GC/MS NMR IR UV KF
 
Production Capabilities
Production at 6 plants (affiliate or contract)
>150 vessels at 6 facilities in USA, China, Korea, Taiwan and Finland
>2000m3 capacity
Vessels from 300L to 10,000L
Temps from -80 to 350C
 
Production Services
Tech Transfer
Scale Up
Optimization
Non-GMP and GMP (FDA inspected)
Pilot to large commercial scale