| Names | |
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| IUPAC name Scandium(III) hydroxide | |
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| ChemSpider | |
| ECHA InfoCard | 100.037.855 
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| PubChem CID | |
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| Properties | |
| Chemical formula | Sc(OH)3 |
| Molar mass | 95.977 g·mol |
| Density | 2.65 g·cm |
| Solubility in water | 0.268 g/(100 mL) |
| Solubility product (Ksp) | 2.22×10 |
| Related compounds | |
| Other anions | Scandium chloride Scandium fluoride Scandium nitrate |
| Other cations | Yttrium(III) hydroxide Lutetium(III) hydroxide |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references | |
Scandium(III) hydroxide is an inorganic compound with the chemical formula Sc(OH)3, the trivalent hydroxide of scandium. It is an amphoteric compound. 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). 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 Sc(OH)1.75Cl1.25, Sc(OH)2NO3 and Sc(OH)2.32(SO4)0.34.
References
- John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99 ed.). CRC Press. pp. 5–189. ISBN 978-1138561632.
- 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.
- 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.
- Vickery, R. C. (1955). "Scandium hydroxide and scandate ions". Journal of the Chemical Society (Resumed): 251. doi:10.1039/jr9550000251. ISSN 0368-1769.
- Mironov, N. N.; Mal'kevich, N. V. Scandium hydroxide formation reaction. Zhurnal Neorganicheskoi Khimii, 1970. 15 (3): 599-601.
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