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EDTMP

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EDTMP
Names
IUPAC name methylphosphonic acid
Other names Ethylenediamine tetra(methylene phosphonic acid), EDTMP
Identifiers
CAS Number
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.014.410 Edit this at Wikidata
PubChem CID
UNII
CompTox Dashboard (EPA)
InChI
  • InChI=1S/C6H20N2O12P4/c9-21(10,11)3-7(4-22(12,13)14)1-2-8(5-23(15,16)17)6-24(18,19)20/h1-6H2,(H2,9,10,11)(H2,12,13,14)(H2,15,16,17)(H2,18,19,20)Key: NFDRPXJGHKJRLJ-UHFFFAOYSA-N
  • InChI=1/C6H20N2O12P4/c9-21(10,11)3-7(4-22(12,13)14)1-2-8(5-23(15,16)17)6-24(18,19)20/h1-6H2,(H2,9,10,11)(H2,12,13,14)(H2,15,16,17)(H2,18,19,20)Key: NFDRPXJGHKJRLJ-UHFFFAOYAV
SMILES
  • O=P(O)(O)CN(CP(=O)(O)O)CCN(CP(=O)(O)O)CP(=O)(O)O
Properties
Chemical formula C6H20N2O12P4
Appearance solid
Solubility in water limited
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). checkY verify (what is  ?) Infobox references
Chemical compound

EDTMP or ethylenediamine tetra(methylene phosphonic acid) is a phosphonic acid. It has chelating and anti corrosion properties. EDTMP is the phosphonate analog of EDTA.

Properties

EDTMP is normally delivered as salts, due to the acid form has very limited solubility in water. It is a nitrogenous organic polyphosphonic acid. Its corrosion inhibition is 3-5 times better than that of inorganic polyphosphate, has good chemical stability and thermal tolerance. It shows excellent scale inhibition ability under temperature 200 °C. 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. EDTMP shows better antiscale effects to calcium sulfate and barium sulfate.

Applications

Categories:
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