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Thorium oxalate

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Thorium oxalate
Identifiers

CAS Number	2040-52-0
ECHA InfoCard	100.016.400
EC Number	218-038-3
PubChem CID	74880
CompTox Dashboard (EPA)	DTXSID90942566
Properties
Chemical formula	C₄O₈Th
Molar mass	408.07 g/mol 444.114 g/mol (dihydrate)
Density	4.637 g/cm³ (anhydrous)
Solubility product (K_sp)	5.01 × 10⁻²⁵
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Thorium oxalate is the inorganic compound with the formula Th(C₂O₄)₂(H₂O)₄. It is a white insoluble solid prepared by the reaction of thorium(IV) salts with an oxalic acid.^[1] The material is a coordination polymer. Each Th(IV) center is bound to 10 oxygen centers: eight provided by the bridging oxalates and two by a pair of aquo ligands. Two additional water of hydration are observed in the lattice.^[2]

The solubility product (K_sp) of thorium oxalate is 5.01 × 10⁻²⁵.^[3] Density of anhydrous thorium oxalate is 4.637 g/cm³.

References[edit]

^ Enver Oktay, Ahmet Yayli (2001) Physical properties of thorium oxalate powders and their influence on the thermal decomposition Journal of Nuclear Materials Volume 288, Issue 1, January 2001, Pages 76–82

^ Ziegelgruber, Kate L.; Knope, Karah E.; Frisch, Mark; Cahill, Christopher L. (2008). "Hydrothermal Chemistry of Th(IV) with Aromatic dicarboxylates: New Framework Compounds and in Situ Ligand Syntheses". Journal of Solid State Chemistry. 181 (2): 373–381. Bibcode:2008JSSCh.181..373Z. doi:10.1016/j.jssc.2007.12.008.

^ Taishi Kobayashi, Takayuki Sasaki, Ikuji Takagi, Hirotake Moriyama (2009) Solubility of Thorium(IV) in the Presence of Oxalic and Malonic Acids Journal of Nuclear Science and Technology, Vol. 46, No. 11, p. 1085–1090

External links[edit]

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Thorium compounds

Th(II)

Th(III)

Th(IV)

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