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|Colour:||White Crystalline||Molecular Weight:||137.91|
General Introduction of Scandium Oxide Sc2O3
Scandium(III) oxide, Sc2O3, or scandia, is a high melting rare earth oxide. 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).
Scandium(III) oxide, Sc2O3, adopts a cubic crystal structure (point group: tetrahedral (Th), space group: Ia3) containing 6-coordinate metal centres. Powder diffraction analysis shows Sc-O bond distances of 2.159-2.071Å.
Scandium Oxide, Sc2O3, is an insulator with a band gap of 6.0 eV.
Scandium oxide, Sc2O3, is the primary form of refined scandium produced by the mining industry. Scandium-rich ores, such as thortveitite (Sc,Y)2(Si2O7) and kolbeckite ScPO4·2H2O are rare, however trace amounts of scandium are present in many other minerals. Scandium oxide is therefore predominately produced as a by-product from the extraction of other elements.
Scandium oxide, Sc2o3, is the primary form of refined scandium produced by the mining industry, making it the start point for all scandium chemistry.
Scandium oxide, Sc2O3, reacts with most acids upon heating, to produce the expected hydrated product. For example, heating in excess aqueous HCl produces hydrated ScCl3·nH2O. This can be rendered anhydrous by evaporation to dryness in the presence of NH4Cl, with the mixture then being purified by removal of NH4Cl by sublimation at 300-500 °C. The presence of NH4Cl is required, as the hydrated ScCl3·nH2O would otherwise form a mixedoxychloride upon drying.
Sc2O3 + 6 HCl + x H2O → 2 ScCl3·nH2O + 3 H2O
ScCl3·nH2O + n NH4Cl → ScCl3 + n H2O + n NH4Cl
Likewise, it is converted into hydrated scandium(III) triflate (Sc(OTf)3·nH2O) by a reaction with triflic acid.
Metallic scandium is produced industrially by the reduction of scandium oxide; this proceeds via conversion toscandium fluoride followed by a reduction with metallic calcium. This process is in some ways similar to theKroll process for the production of metallic titanium.
Scandium oxide ( Sc2O3) forms scandate salts with alkalis, unlike its higher homologues yttrium oxide and lanthanum oxide (La2O3), for example forming K3Sc(OH)6 with KOH. In this, scandium shows more similarity with aluminium oxide.
Scandium oxide, Sc2O3, produces high-index film layers that are transparent to wavelengths as short as 225 nm in the UV region. The films are insoluble and hard.
Scandium oxide (Sc2O3) films require an electron-beam source to reach evaporation temperature. Amorphous films can be deposited below 150° C substrate temperature.
|Region of transparency:||~250 nm to >5 µm|
|Refractive index:||300 nm: 1.95
400 nm: 1.90
500 nm-700 nm: 1.85
Scandium Oxide Powder (Sc2O3) Synonyms
scandium oxide, scandium oxide (Sc2O3), scandium(III) oxide, discandium trioxide, scandia, scandium sesquioxide, scandium(III)-oxid, scandium-III-oxid, scandium(III) oxide, scandiumoxid, CAS# 12060-08-1, EINECS 235-042-0
Scandium Oxide Powder (Sc2O3) Designations
a) Chemical Name: Scandium (III) oxide
b) Chemical Formula: Sc2O3
Scandium Oxide Powder (Sc2O3) Description
a) Scandium oxide is a lightweight refractory oxide. It comes from several sources including minerals, certain uranium tailings and some phosphate ores.
b) Scandium oxide 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 Oxide Powder (Sc2O3) Chemical Properties Available
99.9% to 99.9999%
Scandium Oxide Powder (Sc2O3) Physical Properties Available
Targets, pieces, and powder
Scandium Oxide Powder (Sc2O3) Typical Applications
Heat and thermal shock resistance in high temperature systems, electronic ceramics and as a helper material in glass composition.
The high index value, transparency, and layer hardness make scandium oxide suitable for the high index component of UV, AR and bandpass coatings. High damage thresholds have been reported for combinations with silicon dioxide or magnesium fluoride for use in AR, beamsplitters, and bandpass filter coatings at 248 nm and 351 nm.
Scandium Oxide Powder (Sc2O3) Packaging
Jars, pails, drums, multiply paper bags, bulk bags and fiberboard containers. For further information on packaging options contact READE
Scandium Oxide Powder (Sc2O3) TSCA (SARA Title III) Status
Not Listed. For further information please call the E.P.A. at 1.202.554.1404
Scandium Oxide Powder (Sc2O3) CAS Number
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