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(H2O) where lactate is CH3CH(OH)CO−2.[2] It is a colorless solid.
2(OH2)2.svg)
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| Names | |
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| IUPAC name
Ferrous 2-hydroxypropanoate
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Other names
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.025.098 |
| E number | E585 (acidity regulators, ...) |
PubChem CID
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| UNII | |
CompTox Dashboard (EPA)
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| Properties | |
| 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) |
| trihydrate: 2.1 g/100ml (10 °C) 8.5 g/100ml (100 °C) dihydrate: 2% (25 °C)[1] | |
| 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).
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Production
editIron(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
editIron (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
edit- ^ 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