Scandium(III) hydroxide explained

Scandium(III) hydroxide is an inorganic compound with the chemical formula, the trivalent hydroxide of scandium. It is an amphoteric compound.[1] It is slightly soluble in water, and its saturated solution (pH = 7.85) contains and a small amount of . 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).[2] Scandium(III) hydroxide can be produced by reacting scandium salts and alkali hydroxides.[3] In the reaction, different starting ingredients can generate different intermediates such as, and .[4]

Notes and References

  1. Moeller. Therald.. Kremers. Howard E.. The Basicity Characteristics of Scandium, Yttrium, and the Rare Earth Elements.. Chemical Reviews. 37. 1. 1945. 97–159. 0009-2665. 10.1021/cr60116a003.
  2. Orlov. Yu. F.. Maslov. E. I.. Belkina. E. I.. Solubilities of metal hydroxides. Russian Journal of Inorganic Chemistry. 58. 11. 2013. 1306–1314. 0036-0236. 10.1134/S0036023613110168. 96558802.
  3. Vickery. R. C.. Scandium hydroxide and scandate ions. Journal of the Chemical Society (Resumed). 1955. 251. 0368-1769. 10.1039/jr9550000251.
  4. Mironov, N. N.; Mal'kevich, N. V. Scandium hydroxide formation reaction. Zhurnal Neorganicheskoi Khimii, 1970. 15 (3): 599-601.

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