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EDTMPS
Synonyms: Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium
CAS No.: 1429-50-1
Molecular Formula: C6H12O12N2P4Na8
M.W.: 612.13
Molecular Structure:
Description: This product is nitrogenous organic polyphosphonic acid, which is a part of cathodic corrosion inhibitor, its property 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 resistance. It shows excellent scale inhibition property under temperature 200¡æ. It 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. EDTMPS shows better antiscale effects to calcium sulfate and barium sulfate.
Specification:
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index
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Appearance
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Clear yellow to umber transparent viscous liquid
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Active component£¨EDTMPS£©£¥ ≥
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30.0 |
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Organic phosphonic (as P) £¥ ≥
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15.0> |
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Phosphorous acid£¨as PO33-£©% ≤
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2.0 |
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Phosphoric acid £¨asPO43 £©% ≤
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1.0 |
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pH value£¨1£¥ water solution£©
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9.5-10.5 |
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Density £¨20¡æ£©g/cm3
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1.25 |
Uses: This product 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 and dyeing industry. When used alone, 2~10mg/L is preferred. When built with HPMA by ratio ETDMP:HPMA=1:3, it can be used in water treatment of low pressure boiler. It can also be built with BTA, PAAS and zinc salt.
Packing and Storage: 25kg in plastic barrel, or 200L in plastic barrel for export, 200kg or 250kg per barrel, or confirmed by clients. Storage for ten months in room shady and dry place.
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