Thorium(IV) hydroxide

Thorium(IV) hydroxide
	source ↗
Names
	IUPAC name Thorium(IV) hydroxide
Identifiers
CAS Number	13825-36-0 Y[PubChem];
3D model (JSmol)	Interactive image;
ChemSpider	145873 Y;
ECHA InfoCard	100.034.097
EC Number	237-522-5;
PubChem CID	166732;
CompTox Dashboard (EPA)	DTXSID501337265 DTXSID70925731, DTXSID501337265 ;
	InChI InChI=1S/4H2O.Th/h4*1H2;/q;;;;+4/p-4 Key: SFKTYEXKZXBQRQ-UHFFFAOYSA-J;
	SMILES [OH-].[OH-].[OH-].[OH-].[Th+4];
Properties
Chemical formula	Th(OH)4
Molar mass	300.07
Appearance	white solid
Related compounds
Other anions	thorium dioxide; thorium nitrate
Other cations	cerium(IV) hydroxide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Thorium(IV) hydroxide is an inorganic compound with a chemical formula Th(OH)₄.

Production

Thorium(IV) hydroxide can be produced by reacting alkali metal hydroxides like sodium hydroxide and potassium hydroxide and soluble thorium salts, such as thorium nitrate.¹²³

Reactions

New thorium(IV) hydroxide is soluble in acid but its solubility will decrease when older.¹

At above 470 °C, thorium(IV) hydroxide will continuously decompose and produce thorium dioxide:³

Th(OH)₄ → ThO₂ + 2 H₂O

Thorium(IV) hydroxide reacts with carbon dioxide gas. Under ambient conditions this produces the hydrated oxide carbonate ThOCO₃·xH₂O, and under higher pressure this produces thorium carbonate hemihydrate (Th(CO₃)₂·½H₂O).⁴³⁵

References

《无机化合物制备手册》.朱文祥主编.化学工业出版社. P₁₄₃. 【III-251】氢氧化钍（thorium hydroxide）
Gayer, K. H.; Leider, H. (1 Dec 1954). "The Solubility of Thorium Hydroxide in Solutions of Sodium Hydroxide and Perchloric Acid at 25°". Journal of the American Chemical Society. 76 (23): 5938–5940. doi:10.1021/ja01652a012.
Wickleder et al., pp. 70–7
H. Ehrhardt, H. Seidel, H. Schweer (March 1980). "Hochdrucksynthesen einiger Carbonate mit überkritischem CO₂". Zeitschrift für anorganische und allgemeine Chemie (in German). 462 (1): 185–198. doi:10.1002/zaac.19804620121. ISSN 0044-2313. Retrieved 2019-11-23.{{cite journal}}: CS1 maint: multiple names: authors list (link)
Wickleder et al., pp. 101–115

Bibliography

Wickleder, Mathias S.; Fourest, Blandine; Dorhout, Peter K. (2006). "Thorium". In Morss, Lester R.; Edelstein, Norman M.; Fuger, Jean (eds.). The Chemistry of the Actinide and Transactinide Elements (PDF). Vol. 3 (3rd ed.). Dordrecht, the Netherlands: Springer. pp. 52–160. doi:10.1007/1-4020-3598-5_3. ISBN 978-1-4020-3555-5. Archived from the original (PDF) on 2016-03-07.

[zb-1] 《无机化合物制备手册》.朱文祥主编.化学工业出版社. P₁₄₃. 【III-251】氢氧化钍（thorium hydroxide）

[Solubility-2] Gayer, K. H.; Leider, H. (1 Dec 1954). "The Solubility of Thorium Hydroxide in Solutions of Sodium Hydroxide and Perchloric Acid at 25°". Journal of the American Chemical Society. 76 (23): 5938–5940. doi:10.1021/ja01652a012.

[Wickleder7077-3] Wickleder et al., pp. 70–7

[4] H. Ehrhardt, H. Seidel, H. Schweer (March 1980). "Hochdrucksynthesen einiger Carbonate mit überkritischem CO₂". Zeitschrift für anorganische und allgemeine Chemie (in German). 462 (1): 185–198. doi:10.1002/zaac.19804620121. ISSN 0044-2313. Retrieved 2019-11-23.{{cite journal}}: CS1 maint: multiple names: authors list (link)

[Wickleder101115-5] Wickleder et al., pp. 101–115

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