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Ethylenebis(nitrilodimethylene)tetraphosphonic acid Quick Details
Product name: Ethylenebis(nitrilodimethylene)tetraphosphonic acid; EDTMPA
CAS: 1429-50-1
Molecular formula: C6H20N2O12P4
Molecular weight: 436.12
Appearance: White crystal powder
Ethylenebis(nitrilodimethylene)tetraphosphonic acid Typical Properties
| Items | Index |
| Appearance | White crystal powder |
| Active acid (as EDTMPA)% | 96.0 min |
| Total phosphonic acid(as PO43-)% | 82.0 min |
| Chloride (Cl-) % | 0.1 max |
| Moisture % | 2.0 max |
| Fe, mg/L | 5.0 max |
| pH(1% water solution) | 2.0 max |
Ethylenebis(nitrilodimethylene)tetraphosphonic acid Usage
EDTMPA is white crystal powder at room temperature, with melting point 215-217ºC, hard to be dissolved in water, the solubility is less that 5% at room temperature, a.EDTMPAhas strong metal ion chelating capacity, whose chelating constant with cuprum ion is larger than that of EDTA.
EDTMPA has high capacity for chelating metal ions. The complex constant with Cu is the largest in all chelating agents including EDTA.EDTMPAis a kind of high-pure grade reagent and innocuous, it can be used as detergent in semiconductor chip to prepare integrated circuit, as carrying agent for radioelement in medical industry, and as agent for inspection and therapy. The chelating capacity ofEDTMPAlargely exceed that of EDTA and DTPA, and can replace EDTA for chelating agent at almost any situation.
Ethylenebis(nitrilodimethylene)tetraphosphonic acid Packaging and Storage
25kg/bag, customers' requirement. Storage for one year in shady room and dry place.
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