Scandium(III) hydroxide

Scandium(III) hydroxide is an inorganic compound with the chemical formula Sc(OH)3, the trivalent hydroxide of scandium. It is an amphoteric compound.[2] It is slightly soluble in water, and its saturated solution (pH = 7.85) contains Sc(OH)3 and a small amount of Sc(OH)2+. The solubility of scandium(III) hydroxide in water is 0.0279 mol/L. It will convert to ScO(OH) after aging, greatly reducing the solubility (0.0008 mol/L).[3] Scandium(III) hydroxide can be produced by reacting scandium salts and alkali hydroxides.[4] In the reaction, different starting ingredients can generate different intermediates such as Sc(OH)1.75Cl1.25, Sc(OH)2NO3 and Sc(OH)2.32(SO4)0.34.[5]

Scandium hydroxide
Names
IUPAC name
Scandium(III) hydroxide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.037.855
EC Number
  • 241-658-0
  • InChI=1S/3H2O.Sc/h3*1H2;/q;;;+3/p-3
    Key: LQPWUWOODZHKKW-UHFFFAOYSA-K
  • [Sc+3].[OH-].[OH-].[OH-]
Properties
Sc(OH)3
Molar mass 95.98 g/mol
Density 2.65 g·cm−3
0.268 g/100 mL
2.22×10−31[1]
Related compounds
Other anions
 Scandium chloride
Scandium fluoride
Scandium nitrate
Other cations
 Yttrium hydroxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

References
  1. John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99 ed.). CRC Press. pp. 5–189. ISBN 1138561630.
  2. Moeller, Therald.; Kremers, Howard E. (1945). "The Basicity Characteristics of Scandium, Yttrium, and the Rare Earth Elements". Chemical Reviews. 37 (1): 97–159. doi:10.1021/cr60116a003. ISSN 0009-2665.
  3. Orlov, Yu. F.; Maslov, E. I.; Belkina, E. I. (2013). "Solubilities of metal hydroxides". Russian Journal of Inorganic Chemistry. 58 (11): 1306–1314. doi:10.1134/S0036023613110168. ISSN 0036-0236. S2CID 96558802.
  4. Vickery, R. C. (1955). "Scandium hydroxide and scandate ions". Journal of the Chemical Society (Resumed): 251. doi:10.1039/jr9550000251. ISSN 0368-1769.
  5. Mironov, N. N.; Mal'kevich, N. V. Scandium hydroxide formation reaction. Zhurnal Neorganicheskoi Khimii, 1970. 15 (3): 599-601.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.