EDTMP
| EDTMP | |
|---|---|
| File:EDTMP.png | |
| [bis(phosphonomethyl)amino]methylphosphonic acid | |
| Other names Ethylenediamine tetra(methylene phosphonic acid), EDTMP | |
| style="background: #F8EABA; text-align: center;" colspan="2" | Properties | |
| Molecular formula | C6H20N2O12P4 |
| Appearance | solid |
| Solubility in water | limited |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
| 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.
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
- Detergents and cleaning agents
- Water treatment
- Scaling inhibitor
- Chelating agent
- in the anti-cancer drug Samarium (153Sm) lexidronam
- Deflocculant / settling retarder
- Anti corrosion agent
