Sodium ferrioxalate

Sodium ferrioxalate
Names
	IUPAC name Sodium iron(III) oxalate, sodium oxalatoferrate, sodium trisoxalatoferrate
	Other names Sodium ferrioxalate; Sodium ferric oxalate; Sodium trisoxalatoferrate (III); Sodium oxalatoferrate
Identifiers
CAS Number	5936-14-1 ; 555-34-0;
3D model (JSmol)	Interactive image;
ChemSpider	147755;
ECHA InfoCard	100.008.267
EC Number	209-092-9;
PubChem CID	131855679;
CompTox Dashboard (EPA)	DTXSID60890505 ;
	InChI InChI=1S/3C2H2O4.Fe.3Na/c33-1(4)2(5)6;;;;/h3(H,3,4)(H,5,6);;;;/q;;;+3;3*+1/p-6 Key: XIPRSXSGWQCSHH-UHFFFAOYSA-H;
	SMILES O=C(C(=O)O1)O[Fe-3]123(OC(C(=O)O2)=O)OC(C(=O)O3)=O.[Na+].[Na+].[Na+];
Properties
Chemical formula	C6FeNa3O12
Molar mass	388.868 g·mol−1
Appearance	lime green hydrated crystals
Density	1.97 g/cm3 at 17 °C
Solubility in water	32.5pts per 100pts solvent, cold water, 182pts per 100pts, boiling water
Structure
Coordination geometry	octahedral
Dipole moment	0 D
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Corrosive. Eye, respiratory and skin irritant.
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H312
Precautionary statements	P264, P270, P280, P301+P312, P302+P352, P312, P322, P330, P363, P501
Related compounds
Other anions	Potassium ferrioxalate
Related compounds	Iron(II) oxalate; Iron(III) oxalate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Sodium ferrioxalate are inorganic compounds with the formula Na₃Fe(C₂O₄)₃(H₂O)_n. The pentahydrate has been characterized by X-ray crystallography. In contrast the potassium, ammonium, and rubidium salts crystallize from water as their trihydrates.

The compound is a salt consisting of ferrioxalate anions, [Fe(C₂O₄)₃]³⁻, and sodium cations Na⁺. The anion is a transition metal complex consisting of an iron atom in the +3 oxidation state and three bidentate oxalate ions C₂O2−4 anions serving as ligands.

The ferrioxalate anion is sensitive to light and higher-energy electromagnetic radiation, which causes the decomposition of one oxalate to carbon dioxide CO₂ and reduction of the iron(III) atom to iron(II).

Names

IUPAC name Sodium iron(III) oxalate, sodium oxalatoferrate, sodium trisoxalatoferrate
Other names Sodium ferrioxalate Sodium ferric oxalate Sodium trisoxalatoferrate (III) Sodium oxalatoferrate
Identifiers
CAS Number	5936-14-1^Y 555-34-0
3D model (JSmol)	Interactive image
ChemSpider	147755
ECHA InfoCard	100.008.267
EC Number	209-092-9
PubChem CID	131855679
CompTox Dashboard (EPA)	DTXSID60890505
InChI InChI=1S/3C2H2O4.Fe.3Na/c33-1(4)2(5)6;;;;/h3(H,3,4)(H,5,6);;;;/q;;;+3;3*+1/p-6 Key: XIPRSXSGWQCSHH-UHFFFAOYSA-H
SMILES O=C(C(=O)O1)O[Fe-3]123(OC(C(=O)O2)=O)OC(C(=O)O3)=O.[Na+].[Na+].[Na+]
Properties
Chemical formula	C₆FeNa₃O₁₂
Molar mass	388.868 g·mol⁻¹
Appearance	lime green hydrated crystals
Density	1.97 g/cm³ at 17 °C
Solubility in water	32.5pts per 100pts solvent, cold water, 182pts per 100pts, boiling water
Structure
Coordination geometry	octahedral
Dipole moment	0 D
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	Corrosive. Eye, respiratory and skin irritant.
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H312
Precautionary statements	P264, P270, P280, P301+P312, P302+P352, P312, P322, P330, P363, P501
Related compounds
Other anions	Potassium ferrioxalate
Related compounds	Iron(II) oxalate Iron(III) oxalate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is ^YN ?) Infobox references