Iron(III) citrate

Iron(III) citrate
	; One of several ferric citrate complexes
Names
	IUPAC name iron(3+) 2-hydroxypropane-1,2,3-tricarboxylate
Identifiers
CAS Number	3522-50-7 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:144421;
ChemSpider	55239;
ECHA InfoCard	100.020.488
PubChem CID	61300;
UNII	63G354M39Z ;
CompTox Dashboard (EPA)	DTXSID0037657 ;
	InChI InChI=1S/C6H8O7.Fe/c7-3(8)1-6(13,5(11)12)2-4(9)10;/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);/q;+3/p-3 Key: NPFOYSMITVOQOS-UHFFFAOYSA-K;
	SMILES C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O.[Fe+3];
Properties
Chemical formula	C6H5FeO7
Molar mass	244.944 g·mol−1
Appearance	dark orange-red brown solid
Solubility in water	~5 g/L in water
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). (what is ?) Infobox references

Ferric citrate or iron(III) citrate describes any of several complexes formed upon binding any of the several conjugate bases derived from citric acid with ferric ions. Most of these complexes are orange or red-brown. They contain two or more Fe(III) centers.

Ferric citrates contribute to the metabolism of iron by some organisms. Citrates, which are released by plant roots and by some microorganisms, can solubilize iron compounds in the soil. For example ferric hydroxide reacts with citrates to give form soluble complexes. This solubilization provides a pathway for the absorption of the ferric ions by various organisms.

Ferric citrate is used in medicine to regulate the blood levels of iron in patients with chronic kidney disease on dialysis. It acts by forming an insoluble compound with phosphate present in the diet and thus minimizing its uptake by the digestive system.

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