Iron(II) lactate
2(OH2)2.svg) | |
| Names | |
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| IUPAC name
Ferrous 2-hydroxypropanoate | |
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 |
| Hazards | |
| GHS labelling:[2] | |
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| Warning | |
| H302, H315, H319, H335 | |
| P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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.[3] It is a colorless solid.
Production
[edit]Iron(II) lactate can be produced through several reactions, among which are calcium lactate with iron(II) sulfate according to the following reaction:[4]
- 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
[edit]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[citation needed]. 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 as a remedy for iron-deficiency anemia, both to fortify foods with iron[5] and as a nutritional supplement in tablet or pill form. As a food additive it is coded under the E number E585[6].
References
[edit]- ↑ Iron(II) lactate dihydrate MSDS Archived 2014-05-03 at the Wayback Machine at Jost Chemical
- ↑ PubChem. "Ferrous Lactate". pubchem.ncbi.nlm.nih.gov. Retrieved 2026-05-18.
- ↑ 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
- ↑ Hurrell, Richard F. (2009-04-27). "Preventing Iron Deficiency Through Food Fortification". Nutrition Reviews. 55 (6): 210–222. doi:10.1111/j.1753-4887.1997.tb01608.x. hdl:20.500.11850/422923.
- ↑ "Approved additives and E numbers". Food Standards Agency. Archived from the original on 2022-04-22. Retrieved 2026-06-26.