Weifang Taihe Water-Treatment Co., Ltd.
Main products:water treatment chemical
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  • Contact Person : Mr. zhao chariles
  • Company Name : Weifang Taihe Water-Treatment Co., Ltd.
  • Tel : 86-536-8231119
  • Fax : 86-536-8231119
  • Address : Shandong,weifang,Shengli street, Kuiwen, Weifang city, Shandong province, P.R of CHINA.
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Ethylene Diamine Tetra Methylene Phosphonic Acid Sodium EDTMPS

Ethylene Diamine Tetra Methylene Phosphonic Acid Sodium EDTMPS
Product Detailed
Water treatmnet chemical EDTMPS. CAS No. 1429-50-1 Molecular Formula: C6H12O12N2P4Na8 Molecular weight: 612.

Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium


Water treatmnet chemical EDTMPS.

CAS No.  1429-50-1

Molecular Formula:   C6H12O12N2P4Na8          

Molecular weight: 612.13

Structural Formula:



EDTMPS is nitrogenous organic polyphosphonic acid, a part of cathodic corrosion inhibitor.Its corrosion inhibition is 3~5 times better than that of inorganic polyphosphate. It can be fully dissolved in water, innocuous and none pollution to environment, has good chemical stability and thermal tolerance. It shows excellent scale inhibition ability under temperature 200°C. It can dissociate into 8 positive-negative ions, thus can chelate with many metal ions to form polymer reticulation complex, to destroy the normal crystallization of calcium scale. EDTMPS shows better antiscale effects to calcium sulfate and barium sulfate. 





Clear yellow to umber transparent liquid

Active component (EDTMPS)%


Organic phosphonic acid (asPO43- )%


Phosphorous acid (as PO33-)%


Phosphoric acid (asPO43- )%


pH (1% water solution)


Density (20°C) g/cm3


Chloride (Cl-) %



EDTMPS can be used as corrosion inhibitor in circulating cool water system and boiler water. It is a chelating agent in non-cyanogen electroplating industry and a water-softening agent in printing & dyeing industry. When used alone, 2~10mg/L is preferred. When built with HPMA by ratio ETDMP:HPMA=1:3, it can be used for low pressure boiler. It can also be built with BTA, PAAS and zinc salt.

Package and Storage:

200L plastic drum,IBC(1000L),customers’ requirement. Storage for ten months in shady room and dry place.

Safety Protection:

Acidity, Avoid contact with eye and skin, once contacted, flush with water.






Ethylene Diamine Tetra Methylene Phosphonic Acid Sodium EDTMPS

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