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1-Hydroxy Ethylidene-1/HEDP

Product Name:1-Hydroxy Ethylidene-1/HEDP

Appearance:Colorless to pale yellow aqueous solution and Powder

CAS No.: 2809-21-4

Product Detail

Product Description：

Hydroxyethylidene Diphosphonic Acid (HEDP) is a widely used organophosphorus scale and corrosion inhibitor with excellent chelating and stabilizing properties. It demonstrates high thermal stability, resistance to hydrolysis, and compatibility under a wide range of pH conditions.

HEDP effectively inhibits the formation and deposition of scale-forming salts such as calcium carbonate, calcium sulfate, and barium sulfate. It also exhibits outstanding corrosion inhibition on metals including carbon steel, copper, and stainless steel, making it suitable for industrial water treatment, cooling systems, boiler water treatment, and oilfield applications.

Product specification:

Item		Specification
Appearance		Colorless or pale yellow transparent liquid		White crystal/powder
Active component (calculated as HEDP) %	≥	50.0	60.0	98
Phosphorous acid (calculated as PO33-) %	≤	2.0	2.0	0.80
Phosphoric acid (calculated as PO43-) %	≤	0.8	0.8	0.50
Chloride (calculated as Cl-) %	≤	0.01	0.01	0.01

Product Applications :

HEDP 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..

In light woven industry,HEDP is used as detergent for metal and nonmetal.

In dyeing industry,HEDPis used as peroxide stabilizer and dye-fixing agent;

In non-cyanide electroplating,HEDPis 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,HEDPis used together with polycarboxylic acid.

Product Packing:

Powder: 25KG bag , 25MT/20'FCL .

Liquid: 270kg drum, 21.6MT/20'FCL

also be packed according to customer's needs.

Previous : Trisodium Phosphate/TSP Next : Amino Trimethylene Phosphonic Acid/ATMP

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