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Molecular Formula:    C6H12O12N2P4Na8

CAS No.  1429-50-1

Alias: EDTMPS

Molecular weight: 612.13

Structural Formula:


 

Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium EDTMPS CAS No.1429-50-1

Properties & Use

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℃. 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. 


 

Specification:

Items	Index
Appearance	Clear yellow to umber transparent liquid
Active component (EDTMPS)%	28.0min
Organic phosphonic acid (asPO43- )%	10.0min
Phosphorous acid (as PO33-)%	5.0max
Phosphoric acid (asPO43- )%	1.0max
pH (1% water solution)	9.5-10.5
Density (20℃) g/cm3	1.25min
Chloride (Cl-) %	3.0max

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Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium ,EDTMPS