EDTMPS

• Category :

  Catalyst and Auxiliary

• Synonyms :

  Ethylene diamine tetramethylene phcsphonic acid Sodium;Water quality stabilizer EDTMPS;EDTMPS;Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium

• CAS NO :

  22036-77-7

• EC NO :

  244-742-5

• Molecular Formula :

  C₆H₁₂O₁₂N₂P₄Na₈

• Molecular Weight :

  612.13

• Main Specifications :

• Product description :

  Introduction s:

  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. 

  CAS No.  22036-77-7 

  Molecular Formula:   C₆H₁₂O₁₂N₂P₄Na₈

  Molecular weight: 612.13

  Technologies :

  Items	Index
  Appearance	Yellow to umber transparent liquid
  Active component (as EDTMPS)%	30.0 min
  Organic phosphonic acid (as PO43-)%	10.0 min
  Phosphorous acid (as PO33-)%	3.0 max
  Phosphoric acid (as PO43-)%	1.0 max
  pH (1% water solution)	9.5-10.5
  Density (20℃) g/cm3	1.25 min
  Chloride (Cl-) %	2.0 max

  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 EDTMP:HPMA=1:3, it can be used for low pressure boiler. It can also be built with BTA, PAAS and zinc salt.

  Package and Storage:

  200L plastic drum, IBC(1000L),customers’ requirement. Storage for ten months in shady room and dry place.

• Molecular Structure :