Ferric oxalate

Ferric oxalate
Names
	Systematic IUPAC name iron(3+) ethanedioate (2:3)
	Other names Iron(III) oxalate
Identifiers
CAS Number	2944-66-3 (Anhydrous) ; 166897-40-1 (hexahydrate);
3D model (JSmol)	Interactive image;
ChemSpider	147789;
ECHA InfoCard	100.019.047
EC Number	220-951-7;
PubChem CID	168963;
UNII	DTJ9P8AB5L ;
CompTox Dashboard (EPA)	DTXSID10905951 ;
	InChI InChI=1S/3C2H2O4.2Fe/c33-1(4)2(5)6;;/h3(H,3,4)(H,5,6);;/q;;;2*+3/p-6;
	SMILES [Fe+3].[Fe+3].O=C([O-])C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O;
Properties
Chemical formula	C6Fe2O12
Molar mass	375.747 g/mol
Appearance	Pale yellow solid (anhydrous); Lime green solid (hexahydrate)
Odor	odorless
Melting point	365.1 °C (689.2 °F)
Solubility in water	slightly soluble
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Ferric oxalate, also known as iron(III) oxalate, refers to inorganic compounds with the formula Fe₂(C₂O₄)₃(H₂O)_x but could also refer to salts of [Fe(C₂O₄)₃]^3-. Fe₂(C₂O₄)₃(H₂O)_x are coordination polymers with varying degrees of hydration. The coordination complex with the formula [Fe(C₂O₄)₃]^3- forms a variety of salts, a well-known example being potassium ferrioxalate. This article emphasizes the coordination polymers.

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