Misplaced Pages

Iron(II) acetate

Names
IUPAC name Iron(II) acetate
Other names Ferrous acetate
Identifiers
CAS Number	3094-87-9 19807-28-4 tetrahydrate
3D model (JSmol)	coordination form: Interactive image ionic form: Interactive image
ChemSpider	17323
ECHA InfoCard	100.019.492
PubChem CID	18344
RTECS number	AI3850000
UNII	L80I7M6D3Q
CompTox Dashboard (EPA)	DTXSID5037656
InChI InChI=1S/2C2H4O2.Fe/c2*1-2(3)4;/h2*1H3,(H,3,4);/q;;+2/p-2Key: LNOZJRCUHSPCDZ-UHFFFAOYSA-L InChI=1/2C2H4O2.Fe/c2*1-2(3)4;/h2*1H3,(H,3,4);/q;;+2/p-2Key: LNOZJRCUHSPCDZ-NUQVWONBAS
SMILES coordination form: CC(O1)O12OC(O2)C ionic form: CC(=O)..CC(=O)
Properties
Chemical formula	C4H6FeO4
Molar mass	173.933 g·mol
Appearance	White crystals (anhydrous) Light green crystals (tetrahydrate)
Odor	Odorless
Density	1.734 g/cm (−73 °C)
Melting point	190–200 °C (374–392 °F; 463–473 K) decomposes
Solubility in water	Soluble
Structure
Crystal structure	Orthorhombic, oP75 (200 K)
Space group	Pbcn, No. 60 (200 K)
Point group	2/m 2/m 2/m (200 K)
Lattice constant	a = 18.1715(4) Å, b = 22.1453(5) Å, c = 8.2781(2) Å (200 K)α = 90°, β = 90°, γ = 90°
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P305+P351+P338
NFPA 704 (fire diamond)	2 0 0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). N verify (what is  ?) Infobox references

Iron(II) acetate describes compounds with formula Fe(CH₃CO₂)₂·(H₂O)_x where x can be 0 (anhydrous) or 4 (tetrahydrate). The anhydrous compound is a white solid, although impure samples can be slightly colored. The tetrahydrate is light green solid that is highly soluble in water.

Preparation and structure

Iron powder reacts with acetic acid to give the ferrous acetate, with evolution of hydrogen gas:

Fe + 2 CH₃CO₂H → Fe(CH₃CO₂)₂ + H₂

Reaction of scrap iron with acetic acid affords a brown mixture of various iron(II) and iron(III) acetates that are used in dyeing.

It can also be made from the insoluble, olive green, Iron(II) carbonate.

It adopts a polymeric structure with octahedral Fe(II) centers interconnected by acetate ligands. It is a coordination polymer.

Uses

Ferrous acetate is used as a mordant by the dye industry. Ebonizing wood is one such process.

References

1. ^ Weber, Birgit; Betz, Richard; Bauer, Wolfgang; Schlamp, Stephan (2011). "Crystal Structure of Iron(II) Acetate". Zeitschrift für anorganische und allgemeine Chemie. 637: 102–107. doi:10.1002/zaac.201000274.
2. ^ Lide, David R., ed. (2009). CRC Handbook of Chemistry and Physics (90th ed.). Boca Raton, Florida: CRC Press. ISBN 978-1-4200-9084-0.
3. ^ Sigma-Aldrich Co., Iron(II) acetate. Retrieved on 2014-05-03.
4. "MSDS of Ferrous acetate". fishersci.ca. Fair Lawn: Fisher Scientific. Retrieved 2014-08-02.
5. "Synthesis of Iron(II) acetate hydrate (ferrous acetate)". Archived from the original on 2013-08-25. Retrieved 2009-01-07.
6. Wildermuth, Egon; Stark, Hans; Friedrich, Gabriele; Ebenhöch, Franz Ludwig; Kühborth, Brigitte; Silver, Jack; Rituper, Rafael (2000). "Iron Compounds". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a14_591. ISBN 978-3527306732.
7. Ebonizing Wood with Ferric Acetate

• Acetates
• Iron(II) compounds