CAS 1429-50-1 Ethylene Diamine Tetra EDTMPA ( Solid ) C6H20N2O12P4 Used In Water Treatment Chemicals
Basic Information
Other Names : =DTMPA ; EDTMP ; EDTMP(A); Ethylene Diamine Tetra (Methylene Phosphonic Acid); EDTPO
Molecular Formula : C6H12O12N2P4Na8
Molecular Weight : 436.12
CAS NO. : 1429-50-1
EINECS NO. : 215-851-5
Properties:
EDTMPA is white crystal powder at room temperature, with melting point 215-217°C, hard to be dissolved in water, the solubility is less that 5% at room temperature, easy dissolved in ammonia. EDTMPA has strong metal ion chelating capacity, whose chelating constant with cuprum ion is larger than that of EDTA.
Product Parameters
| Items | Index | |
| Appearance | Clear. Coloriess to pale yellow aqueous solution | White crystal powder |
| Active content (HEDP)% | 58.0-62.0 | 90.0 min |
| Active content (HEDP·H2O)% | 98.0 min | |
| Phosphorous acid (as PO4)% | 1.0 max | 0.8 max |
| Phosphoric acid (asPO4)% | 0.6 max | 0.5 max |
| Chloride (as CI-) ppm | 100.0 max | 100.0max |
| pH (1% solution) | 2.0 max | 2.0 max |
| Density (20°C)g/cm3 | 1.43-1.47 | - |
| Fe, mg/L | 10.0 max | 5.0 max |
| Colour APHA (Hazen) | 30.0 max | - |
| Ca sequestration (mg CaCO3/g) | 500.0 min | - |
Packaging Types
as customers ' requirement
Storage Information
Storage for one year in shady room and dry place.
EDTMPA has high capacity for chelating metal ions. The complex constant with Cu is the largest in all chelating agents including EDTA. EDTMPA is 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 of EDTMPA largely exceed that of EDTA and DTPA, and can replace EDTA for chelating agent at almost any situation.
