Gadolinium(III) oxalate

Gadolinium oxalate is the oxalate of gadolinium, with the chemical formula Gd₂(C₂O₄)₃. Its hydrate can be prepared by the reaction of gadolinium nitrate and oxalic acid.^[1]

Gadolinium(III) oxalate

Identifiers
CAS Number	867-64-1 Y
3D model (JSmol)	Interactive image decahydrate: Interactive image
ChemSpider	132965 decahydrate: 21241441
ECHA InfoCard	100.011.606
EC Number	212-766-5
PubChem CID	150859 decahydrate: 159625035
CompTox Dashboard (EPA)	DTXSID101014689
InChI InChI=1S/3C2H2O4.2Gd/c3*3-1(4)2(5)6;;/h3*(H,3,4)(H,5,6);;/q;;;2*+3/p-6 Key: SQORATIMOBOFKR-UHFFFAOYSA-H decahydrate: InChI=1S/3C2H2O4.2Gd.10H2O/c3*3-1(4)2(5)6;;;;;;;;;;;;/h3*(H,3,4)(H,5,6);;;10*1H2/q;;;2*+3;;;;;;;;;;/p-6 Key: MOJMYWALZOTAOX-UHFFFAOYSA-H
SMILES [Gd+3].[Gd+3].[O-]C(=O)C(=O)[O-].[O-]C(=O)C(=O)[O-].[O-]C(=O)C(=O)[O-] decahydrate: C(=O)(C(=O)[O-])[O-].C(=O)(C(=O)[O-])[O-].C(=O)(C(=O)[O-])[O-].O.O.O.O.O.O.O.O.O.O.[Gd+3].[Gd+3]
Properties
Chemical formula	Gd2(C2O4)3
Molar mass	578.55 g/mol
Appearance	colorless crystals
Solubility in water	insoluble
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H302+H312+H332, H312, H315, H319, H332, H335
Precautionary statements	P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P317, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501
Related compounds
Other cations	Cerium(III) oxalate Europium(III) oxalate Holmium(III) oxalate Lanthanum(III) oxalate Neodymium(III) oxalate Praseodymium(III) oxalate Promethium(III) oxalate Samarium(III) oxalate Terbium(III) oxalate Thulium(III) oxalate Ytterbium(III) oxalate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Properties

The decahydrate of gadolinium oxalate thermally decomposes to obtain the anhydrous form, which can then be heated to produce gadolinium oxide.^[2] Gadolinium oxalate reacts with hydrochloric acid to produce Gd(C₂O₄)Cl.^[3] It also reacts with sodium hydroxide under hydrothermal conditions to produce gadolinium hydroxide.^[1]