DTPMP

DTPMP
IUPAC name [[(Phosphonomethyl)imino]]bis[[2,1-ethanediylnitrilobis(methylene)]]tetrakis-phosphonic acid
Other names DTPMPA, Diethylenetriaminepenta(methylene-phosphonic acid)
Identifiers
CAS number	15827-60-8 Y
PubChem	85128
ChemSpider	76777 Y
Jmol-3D images	Image 1
SMILES O=P(O)(O)CN(CP(=O)(O)O)CCN(CCN(CP(=O)(O)O)CP(=O)(O)O)CP(=O)(O)O
InChI InChI=1S/C9H28N3O15P5/c13-28(14,15)5-10(1-3-11(6-29(16,17)18)7-30(19,20)21)2-4-12(8-31(22,23)24)9-32(25,26)27/h1-9H2,(H2,13,14,15)(H2,16,17,18)(H2,19,20,21)(H2,22,23,24)(H2,25,26,27) Y Key: DUYCTCQXNHFCSJ-UHFFFAOYSA-N Y InChI=1/C9H28N3O15P5/c13-28(14,15)5-10(1-3-11(6-29(16,17)18)7-30(19,20)21)2-4-12(8-31(22,23)24)9-32(25,26)27/h1-9H2,(H2,13,14,15)(H2,16,17,18)(H2,19,20,21)(H2,22,23,24)(H2,25,26,27) Key: DUYCTCQXNHFCSJ-UHFFFAOYAC
Properties
Molecular formula	C9H28N3O15P5
Molar mass	573.20
Appearance	solid
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

DTPMP or diethylenetriamine penta(methylene phosphonic acid) is a phosphonic acid. It has chelating and anti corrosion properties.

Properties

DTPMP is normally delivered as salts, because the acid form has very limited solubility in water and tends to crystallize in concentrated aqueous solutions. It is a nitrogenous organic polyphosphonic acid. It shows very good inhibition of the precipitation of barium sulfate (BaSO₄). At high alkali and high temperature (above 210 °C) environments DTPMPA has better scale and corrosion inhibition effect than other phosphonates.

Applications

• Detergents and cleaning agents
• Water treatment
• Scaling inhibitor
• Chelating agent
• Deflocculation agent / settling retarder
• Anti corrosion agent