• Description

Chemical Family :water treatment chemicals

Product Name :EDTMP.Na5

Chemical Name : pentasodium trihydrogen [ethane-1,2-diylbis[nitrilobis(methylene)]]tetrakisphosphonate

CAS No : 7651-99-2

Details :

Pentasodium Salt of Ethylene Diamine Tetra (Methylene Phosphonic Acid) (EDTMPNa5)

CAS No. 7651-99-2

Molecular Formula: C6H15O12N2P4Na5         

Molecular weight: 409



EDTMPNa5 is a neutral solid product. It is nitrogenous organic polyphosphonic acid, which is a part of cathodic corrosion inhibitor. EDTMPNa5 can be fully dissolved in water, innocuous and none pollution to environment, has good chemical stability and thermal tolerance. EDTMPNa5 has good scale inhibition property under temperature 200°C. EDTMPNa5 can dissociate into 8 positive-negative ions, thus can chelate with more than two metal ions to form more than two polymer reticulation complex, the complex can be quickly dissolved in water to destroy the normal crystallization of calcium scale. EDTMPNa5 shows better scale inhibition effects to calcium sulfate and barium sulfate.

 EDTMPNa5 can be used as scale and corrosion inhibitor for circulating water and boiler water system, chelating agent in non-cyanide electroplating, water-softening agent in dyeing industry, etc.

The solid state EDTMPNa5 is slightly easy to deliquescence, convenient in transportation and suitable for usage in winter and freezing districts.


items index
Appearance Amber transparent liquid White powder
Active content (EDTMP5Na)% 30.0-32.5 81.4 min
Active content (EDTMPA)% 24.0-26.0 65.0 min
Chloride (Cl-) % 2.0 max 2.0 max
Density (20°C) g/cm3 1.25 max --
Fe(Fe3+)ppm 20 max 20 max
PH (1% water solution) 6.0-8.0 6.0-8.0

Package and Storage:

For liquid: Normally In 250kg net Plastic Drum, IBC drum can also be used as required. Storage for ten months in room shady and dry place.

For solid: inner liner polyethylene (PE) bag, outer plastic woven bag, or confirmed by clients. Storage for one year in room shady and dry place.

Related Products:ATMP.4Na
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