Iron(II) lactate

Iron(II) lactate
Names
	IUPAC name Ferrous 2-hydroxypropanoate
	Other names Iron dilactate; Iron(II) lactate; E585;
Identifiers
CAS Number	5905-52-2 ;
3D model (JSmol)	Interactive image;
ChemSpider	20839;
ECHA InfoCard	100.025.098
E number	E585 (acidity regulators, ...)
PubChem CID	22197;
UNII	5JU4C2L5A0 ;
CompTox Dashboard (EPA)	DTXSID501018671 DTXSID20905003, DTXSID501018671 ;
	InChI InChI=1/2C3H6O3.Fe/c21-2(4)3(5)6;/h22,4H,1H3,(H,5,6);/q;;+2/p-2 Key: DKKCQDROTDCQOR-NUQVWONBAL;
	SMILES [Fe+2].[O-]C(=O)C(O)C.[O-]C(=O)C(O)C;
Properties
Chemical formula	C6H10FeO6
Molar mass	233.9888 g/mol (anhydrous); 288.03464 g/mol (trihydrate)
Appearance	greenish-white powder
Melting point	500 °C (932 °F; 773 K)
Solubility in water	trihydrate:; 2.1 g/100ml (10 °C); 8.5 g/100ml (100 °C); dihydrate:; 2% (25 °C)
Solubility	soluble in alkali citrates ; negligible in alcohol ; insoluble in ether
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Ferrous lactate, or iron(II) lactate, are coordination complexes of iron(II) with one or more lactate ligands. One example is Fe(lactate)₂(H₂O)₂(H_₂O) where lactate is CH₃CH(OH)CO−2.^[2] It is a colorless solid.

Production

Iron(II) lactate can be produced through several reactions, among which are calcium lactate with iron(II) sulfate according to the following reaction:^[3]

Ca(C₃H₅O₃)₂(aq) + FeSO₄(aq) → CaSO₄↓ + Fe(C₃H₅O₃)₂(aq)

Another route yielding iron(II) lactate is to combine lactic acid with calcium carbonate and iron(II) sulfate.

Uses

Iron (II) lactate is used as a reagent in the production of proton-exchange membrane fuel cells (PEMFCs), specifically in the production of cathode catalytic converters used in these cells. It is an acidity regulator and, since it oxidizes on contact with air, it has found use as a color retention agent for foodstuffs such as olives. It is also used to fortify foods with iron, as a remedy for anemia due to iron deficiency, and as a nutritional supplement in tablet or pill form. As a food additive it is coded under the E number E585.^{[citation needed]}

References

^ Iron(II) lactate dihydrate MSDS Archived 2014-05-03 at the Wayback Machine at Jost Chemical
^ Ping, Liu; Mao-Chun, Hong (1992). "Fe(CH₃CH(OH)CO₂)₂(H₂O)₂(H₂O)". Jiegou Huaxue (Chin.J.Struct.Chem.). 11: 44.
^ CN104876816A, 刘平祥 & 林家燕, "Synthetic method of ferrous lactate", published 2015-09-02

[Jost-1] Iron(II) lactate dihydrate MSDS Archived 2014-05-03 at the Wayback Machine at Jost Chemical

[2] Ping, Liu; Mao-Chun, Hong (1992). "Fe(CH₃CH(OH)CO₂)₂(H₂O)₂(H₂O)". Jiegou Huaxue (Chin.J.Struct.Chem.). 11: 44.

[:0-3] CN104876816A, 刘平祥 & 林家燕, "Synthetic method of ferrous lactate", published 2015-09-02

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