Scandium(III) hydroxide is an inorganic compound with the chemical formula , the trivalent hydroxide of scandium. It is an amphoteric compound. 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). Scandium(III) hydroxide can be produced by reacting scandium salts and alkali hydroxides. In the reaction, different starting ingredients can generate different intermediates such as , and .Mironov, N. N.; Mal'kevich, N. V. Scandium hydroxide formation reaction. Zhurnal Neorganicheskoi Khimii, 1970. 15 (3): 599-601.
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