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Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium (EDTMPS)
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Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium
CAS No. 1429-50-1
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
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¡É. 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:
Appearance: Clear yellow to umber transparent liquid
Active component (EDTMPS): 30.0% min
Organic phosphonic acid (asPO43- ): 10.0% min
Phosphorous acid (as PO33-):5.0%max
Phosphoric acid (asPO43- ): 1.0%max
pH (1% water solution): 9.5-10.5
Density (20¡É) : 1.25 g/cm3 min
Chloride (as Cl-):3.0% max
Industrial field inorganic chemicals, waste & water treatment
Taihe (Shandong) Water Treatment Company Limited
Phone 86-632-5112055
Fax 86-632-5112055
Homepage http://www.thwater.net
E-mail rita@thwater.com
Address Hongcun,Xiwangzhuang Town,Shizhong District,Zaozhuang City,Shandong Province,China
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