Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium (EDTMPS)

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Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium (EDTMPS)
Posting date : Sep 23, 2011
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Free Member Scince Dec 28, 2010
Payment Terms
T/T
Package
Normally In 250kg net Plastic Drum
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Place of Origin
China [CN]
HS-CODE
29-
Package & Delivery Lead Time
Package
Normally In 250kg net Plastic Drum
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Detailed Description
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 centigrade.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)% 30.0min 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 (as Cl-)% 3.0max Usage: 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.

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