Iron(II) acetate

Iron(II) acetate
Names
	IUPAC name Iron(II) acetate
	Other names Ferrous acetate
Identifiers
CAS Number	3094-87-9 ;
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 ;
	show InChI
	show SMILES
Properties
Chemical formula	C4H6FeO4
Molar mass	173.933 g·mol−1
Appearance	White crystals (anhydrous); Light green crystals (tetrahydrate)
Odor	Odorless
Density	1.734 g/cm3 (−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 pictograms
GHS Signal word	Warning
GHS hazard statements	H315, H319, H335
GHS precautionary statements	P261, P305+351+338
NFPA 704 (fire diamond)	2 0 0
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	(what is ?)
	Infobox references

Iron(II) acetate is a coordination complex with formula Fe(O₂CCH₃)₂. It is a white solid, although impure samples can be slightly colored.^[1] A light green tetrahydrate is also known, which is highly soluble in water.

Preparation and structure[]

Although ferrous acetate can be viewed as a simple salt, X-ray crystallography reveals a complicated polymeric structure.^[1]

Iron powder reacts with acetic acid in electrolysis to give the ferrous acetate, with evolution of hydrogen gas:^[1]

Fe + 2 CH₃CO₂H → Fe(CH₃CO₂)₂ + H₂

It can also be made from the insoluble, olive green, Iron(II) carbonate.^{[citation needed]}

It adopts a polymeric structure with octahedral Fe(II) centers interconnected by acetate ligands. It is a coordination polymer.^[1]

A hydrated form be made by the reaction of ferrous oxide or ferrous hydroxide with acetic acid.^[5]

Reaction of scrap iron with acetic acid affords a brown mixture of various iron(II) and iron(III) acetates that are used in dyeing.^[6]

Uses[]

Ferrous acetate is used as a mordant by the dye industry. Ebonizing wood is one such process.^[7]

References[]

^ Jump up to: ^a ^b ^c ^d ^e ^f 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.
^ Jump up to: ^a ^b Lide, David R., ed. (2009). CRC Handbook of Chemistry and Physics (90th ed.). Boca Raton, Florida: CRC Press. ISBN 978-1-4200-9084-0.
^ Jump up to: ^a ^b ^c ^d Sigma-Aldrich Co., Iron(II) acetate. Retrieved on 2014-05-03.
^ "MSDS of Ferrous acetate". fishersci.ca. Fair Lawn: Fisher Scientific. Retrieved 2014-08-02.
^ "Synthesis of Iron(II) acetate hydrate (ferrous acetate)". Archived from the original on 2013-08-25. Retrieved 2009-01-07.
^ 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.
^ Ebonizing Wood with Ferric Acetate

[rg-1] Jump up to: ^a ^b ^c ^d ^e ^f 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.

[crc-2] Jump up to: ^a ^b Lide, David R., ed. (2009). CRC Handbook of Chemistry and Physics (90th ed.). Boca Raton, Florida: CRC Press. ISBN 978-1-4200-9084-0.

[sigma-3] Jump up to: ^a ^b ^c ^d Sigma-Aldrich Co., Iron(II) acetate. Retrieved on 2014-05-03.

[fca-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.

[Ullmann-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.

[7] Ebonizing Wood with Ferric Acetate

[1]

[2]

[3]

[4]

[5]

[6]

[7]