EDTMP

EDTMP
Names
	IUPAC name [bis(phosphonomethyl)amino]methylphosphonic acid
	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 ;
3D model (JSmol)	Interactive image;
ChemSpider	14301 ;
ECHA InfoCard	100.014.410
PubChem CID	15025;
UNII	V4CP8RSX7V ;
CompTox Dashboard (EPA)	DTXSID3061689 ;
	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
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).
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	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.[1] 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 has good chemical stability and thermal tolerance. 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.

References

Svara, J.; Weferling, N.; Hofmann, T. "Phosphorus Compounds, Organic," In 'Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim, 2008. doi:10.1002/14356007.a19_545.pub2.

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[Svara-1] Svara, J.; Weferling, N.; Hofmann, T. "Phosphorus Compounds, Organic," In 'Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim, 2008. doi:10.1002/14356007.a19_545.pub2.