Shandong, China
Business Type:
Trading Company
Business Range:
Main Products:
Management System Certification:
ISO 9001, ISO 14001
Terms of Payment:
OEM/ODM Service
Sample Available

HEDP, Dequest 2010, 2809-21-4 manufacturer / supplier in China, offering 1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid, Natural Rubber Concentrated High Ammonia Latex, Factory Directly Sell Carbon Black for Rubber and so on.

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1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid

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Min. Order / Reference FOB Price
24 Tons US $800-900/ Ton
Port: Qingdao, China
Production Capacity: 700mt/Mon
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram
Acid-Base Property: Acidic Surface Disposal Agent
Certification: REACH
Environmental Protection: Yes
Color: White
Appearance: Liquid
Type: Industrial Circulating Water Treatment Agent

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Basic Info

Model NO.: HEDP 60%
Shipment: Within 7-10 Days
Trademark: JIALU
Transport Package: 250-300kgs/Drum
Specification: HEDP 60%
Origin: China
HS Code: 2931399090

Product Description

CAS No.  2809-21-4                            
Molecular Formula:   C2H8O7P2                         Molecular weight: 206.02 
Synonyms: Dequest 2010; Etidronic Acid
Structural Formula: 

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. It shows excellent scale and corrosion inhibition effects under temperature 250ºC
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, it has good antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects. 
Solid HEDP is crystal powder, suitable for usage in winter and freezing districts. Due to its high purity, it can be used as cleaning agent in electronic fields and as additives in daily chemicals.  
AppearanceClear, Colorless to pale yellow aqueous solutionWhite crystal powder
Active content (HEDP) 58.0-62.090.0min
Chloride (as Cl-) ppm100.0 max100.0max
pH (1% solution)2.0 max2.0 max
Density  (20ºC) g/cm31.43-1.47-
Fe, mg/L10.0 max5.0 max
Colour APHA (Hazen)30.0 max-
Acetic acid %0.5 max 
Ca sequestration (mg CaCO3/g)500.0 min 
HEDP is used as scale and corrosion inhibition, often build with polycarboxylic acid, 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, it is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, it is used as chelating agent. 
Package and Storage:
Liquid: 200L plastic drum, IBC(1000L), customers' requirement. 
Solid: 25kg/bag, customers' requirement. 
Storage for ten months in room shady and dry place. 
Safety Protection:
Acidity, Avoid contact with eye and skin, once contacted, flush with water. 

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