Iron(III) pyrophosphate
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_pyrophosphate.svg)
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| 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[edit]
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[edit]
- ^ 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
