Back أكسيد السكانديوم Arabic اسکاندیوم اوکسید AZB Oxid skanditý Czech Scandiumoxid German اسکاندیوم اکسید Persian Skandiumoksidi Finnish Oxyde de scandium French स्कैण्डियम(III) ऑक्साइड Hindi Ossido di scandio Italian 酸化スカンジウム(III) Japanese

Scandium oxide

Scandium(III) oxide
__ Sc3+ __ O2−
Names
IUPAC name
Scandium(III) oxide
Other names
Scandia, scandium sesquioxide
Identifiers
3D model (JSmol)
ECHA InfoCard 100.031.844 Edit this at Wikidata
UNII
  • InChI=1S/3O.2Sc
  • O=[Sc]O[Sc]=O
Properties
Sc2O3
Molar mass 137.910 g/mol
Appearance White powder
Density 3.86 g/cm3
Melting point 2,485 °C (4,505 °F; 2,758 K)
insoluble in water
Solubility soluble in hot acids (reacts)
Structure[1]
Bixbyite
Ia3 (No. 206)
a = 985 pm
Hazards
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
1
0
0
Related compounds
Other anions
 Scandium(III) sulfide
Other cations
 Yttrium(III) oxide
Lutetium(III) oxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Scandium(III) oxide or scandia is a inorganic compound with formula Sc2O3. It is one of several oxides of rare earth elements with a high melting point. It is used in the preparation of other scandium compounds as well as in high-temperature systems (for its resistance to heat and thermal shock), electronic ceramics, and glass composition (as a helper material).

  1. ^ Cite error: The named reference Knop1968 was invoked but never defined (see the help page).
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