Iron(III) pyrophosphate
_pyrophosphate.svg.png) | |
| Names | |
|---|---|
| Other names
Ferric pyrophosphate | |
| Identifiers | |
| |
| ECHA InfoCard | 100.030.160 |
| Properties | |
| Fe4(P2O7)3 | |
| Molar mass | 745.224 (anhydrate) 907.348 (nonahydrate) |
| Appearance | yellow solid (nonahydrate)[1] |
| insoluble | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Iron(III) pyrophosphate is an inorganic chemical compound with the formula Fe4(P2O7)3.
Synthesis
Anhydrous iron(III) pyrophosphate can be prepared by heating the mixture of iron(III) metaphosphate and iron(III) phosphate under oxygen with the stoichiometric ratio 1:3. The starting materials can be prepared by reacting iron(III) nitrate nonahydrate with phosphoric acid.[2]
It can be also prepared via the following reaction:[3]
- 3 Na4P2O7(aq) + 4 FeCl3(aq) → Fe4(P2O7)3(s) + 12 NaCl(aq)
References
- ↑ W.M.Haynes. CRC Handbook of Chemistry and Physics (97th edition). New York: CRC Press, 2016. pp 4-68
- ↑ LK Elbouaanani, B Malaman, R Gerardin, et al. Crystal Structure Refinement and Magnetic Properties of Fe4(P2O7)3 Studied by Neutron Diffraction and Mössbauer Techniques. Journal of Solid State Chemistry, 2002. 163 (2): 412-420. doi:10.1006/jssc.2001.9415
- ↑ L. Rossi et al. Colloidal iron(III) pyrophosphate particles. Food Chemistry 151 (2014) 243–247. doi: 10.1016/j.foodchem.2013.11.050
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