Iron(III) pyrophosphate explained

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 reactants can be prepared by reacting iron(III) nitrate nonahydrate with phosphoric acid.^[1]

It can be also prepared via the following reaction:^[2]

3 Na₄P₂O₇(aq) + 4 FeCl₃(aq) → Fe₄(P₂O₇)₃(s) + 12 NaCl(aq)

External links

• Web site: Ferric pyrophosphate nonahydrate . U.S. National Library of Medicine . Drug Information Portal .
• Web site: Ferric pyrophosphate citrate . U.S. National Library of Medicine . Drug Information Portal .

Notes and References

1. Elbouaanani . L.K . Malaman . B . Gérardin . R . Ijjaali . M . Crystal Structure Refinement and Magnetic Properties of Fe4(P2O7)3 Studied by Neutron Diffraction and Mössbauer Techniques . Journal of Solid State Chemistry . Elsevier BV . 163 . 2 . 2002 . 0022-4596 . 10.1006/jssc.2001.9415 . 412–420. 2002JSSCh.163..412E .
2. Rossi L, Velikov KP, Philipse AP . Colloidal iron(III) pyrophosphate particles . Food Chem . 151 . 243–7 . May 2014 . 24423528 . 10.1016/j.foodchem.2013.11.050 .