EDTMP

EDTMP

File:EDTMP.png
Names
Preferred IUPAC name {Ethane-1,2-diylbis[nitrilobis(methylene)]}tetrakis(phosphonic acid)
Other names Ethylenediamine tetra(methylene phosphonic acid), EDTMP
Identifiers
CAS Number	1429-50-1 checkY
3D model (JSmol)	Interactive image
ChemSpider	14301 checkY
ECHA InfoCard
E number
PubChem CID	15025
UNII	V4CP8RSX7V checkY
CompTox Dashboard (EPA)	{{#property:P3117}}
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) checkY Key: NFDRPXJGHKJRLJ-UHFFFAOYSA-N checkY 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
Molar mass	436.13
Appearance	solid
Solubility in water	limited
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). checkY verify (what is checkY☒N ?) Infobox references

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. It is classified as a nitrogenous organic polyphosphonic acid.

Properties and applications

EDTMP is normally delivered as its sodium salt, which exhibits good solubility in water.

Used in water treatment as an antiscaling and anti corrosion agent, the corrosion inhibition of EDTMP is 3–5 times better than that of inorganic polyphosphate. It can degrade to Aminomethylphosphonic acid. It shows excellent scale inhibition ability under temperature 200 °C. It functions by chelating with many metal ions.

The anti-cancer drug Samarium (¹⁵³Sm) lexidronam is also derived from EDTMP.