Thulium(III) oxalate

Thulium(III) oxalate is the oxalate of thulium with the chemical formula Tm₂(C₂O₄)₃. Its hydrate can be prepared by reacting an aqueous solution of thulium(III) chloride and a benzene solution of dimethyl oxalate.^[2] Its pentahydrate is decomposed by heat to obtain the dihydrate, which is further heated to obtain thulium(III) oxide.^[3] It reacts with hydrochloric acid to obtain H[Tm(C₂O₄)₂]·6H₂O.^[4]

Thulium(III) oxalate

Identifiers
CAS Number	3269-17-8 Y
3D model (JSmol)	Interactive image
ChemSpider	144741
ECHA InfoCard	100.019.898
EC Number	221-887-2
PubChem CID	165099
CompTox Dashboard (EPA)	DTXSID40954376
InChI InChI=1S/3C2H2O4.2Tm/c3*3-1(4)2(5)6;;/h3*(H,3,4)(H,5,6);;/q;;;2*+3/p-6 Key: BSCZSHAJTJRUPP-UHFFFAOYSA-H
SMILES [Tm+3].[Tm+3].[O-]C(=O)C(=O)[O-].[O-]C(=O)C(=O)[O-].[O-]C(=O)C(=O)[O-]
Properties
Chemical formula	Tm2(C2O4)3
Appearance	solid
Hazards
GHS labelling:[1]
Pictograms
Signal word	Warning
Hazard statements	H302, H312
Precautionary statements	P264, P270, P280, P301+P317, P302+P352, P317, P321, P330, P362+P364, P501
Related compounds
Other cations	Cerium(III) oxalate Europium(III) oxalate Gadolinium(III) oxalate Holmium(III) oxalate Lanthanum(III) oxalate Neodymium(III) oxalate Praseodymium(III) oxalate Promethium(III) oxalate Samarium(III) oxalate Terbium(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