Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium (Edtmps) By Zaozhuang Youbang Chemicals Co. Ltd.

We are instrumental in providing to our valuable customers excellent quality Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium (EDTMPS) which is available with following specification:-
CAS No.:1429-50-1
Structural Formula:
Molecular Formula:C6H12O12N2P4Na8
Molecular Weight: 612.13

EDTMPS is a 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, and it has a good chemical stability and thermal tolerance. It shows an excellent scale inhibition ability under temperature 200a . 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. It shows better antiscale effects to calcium sulfate and barium sulfate.

Appearance : Clear yellow to umber transparent liquid
Active acid (EDTMPS) % : 28.0 min
Organic phosphoric acid (as PO43-)% : 10.0 min
Phosphorous acid (as PO33-) % : 5.0 max
Phosphoric acid (as PO43-) % : 1.0 max
Chloride (Cl-) % : 3.0 max
pH (1% water solution) : 9.5-10.5
Density (20a ) g/cm3 : 1.25 min

Usage :
EDTMPS can be used as corrosion inhibitor in circulating cool water system and boiler water. It is a chelating agent in non-cyanogens electroplating industry and a water-softening agent in printing & dyeing industry.