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High Quality Content by WIKIPEDIA articles! Scandium(III) oxide, Sc2O3, scandia is a high melting white solid used in high-temperature systems (for its resistance to heat and thermal shock), electronic ceramics, and glass composition (as a helper material). Scandium(III) oxide has the C-M2O3 structure like the -Mn2O3 which contains 6- coordinate metal centers. Scandium(III) oxide can be prepared by igniting the metal. Sc2O3 is amphoteric, dissolving in acids and alkalis. It is converted into scandium(III) chloride by reaction with excess aqueous HCl or aqueous HCl/NH4Cl mixtures.