| Identification | More | [Name]
Scandium oxide | [CAS]
12060-08-1 | [Synonyms]
SC2O3
SCANDIUM(+3)OXIDE
SCANDIUM(III) OXIDE
SCANDIUM STANDARD SOLUTION
scandiumoxide(sc2o3)
Scandium(Ⅲ)oxide
SCANDIUM OXIDE, POWDER, 99.999%
SCANDIUM(III) OXIDE FUSED TABLET DIA&
SCANDIUM OXIDE, 99.9%
SCANDIUM (III) OXIDE (99.9%-SC) (REO)
SCANDIUM (III) OXIDE (99.99%-SC) (REO) SPECTRO
SCANDIUM (III) OXIDE, REACTON, 99.998% (METALS BASIS), REM
SCANDIUM (III) OXIDE SINTERED LUMPS (99.9%-SC) (REO)
Scandium Oxide, 99.9 % (Metals Basis)
Scandium Oxide, 99.99 % (Metals basis)
Scandium(III)oxide,REacton99.998%(metalsbasis),REM50ppm
Scandia
Scandium(III) oxide, 99.90%
SCANDIUM OXIDE NANO-DISPERSION
SCANDIUM OXIDE, 99.99% | [EINECS(EC#)]
235-042-0 | [Molecular Formula]
O3Sc2 | [MDL Number]
MFCD00011223 | [Molecular Weight]
137.91 | [MOL File]
12060-08-1.mol |
| Chemical Properties | Back Directory | [Appearance]
white powder | [Melting point ]
1000 °C
| [density ]
8.35 g/mL at 25 °C(lit.)
| [refractive index ]
1.964 | [storage temp. ]
Inert atmosphere,2-8°C | [solubility ]
soluble in concentrated acid solutions | [form ]
powder
| [color ]
White | [Specific Gravity]
3.864 | [Water Solubility ]
insoluble | [Specific Heat Capacity]
Cp(crystal):0.683054J/(g·K),at 25℃ | [Crystal Structure]
Sc2O3 type | [crystal system]
Cube | [Merck ]
14,8392 | [Space group]
Ia3 | [Lattice constant]
| a/nm | b/nm | c/nm | α/o | β/o | γ/o | V/nm3 | | 0.98459 | 0.98459 | 0.98459 | 90 | 90 | 90 | 0.9545 |
| [InChI]
InChI=1S/3O.2Sc | [InChIKey]
HYXGAEYDKFCVMU-UHFFFAOYSA-N | [SMILES]
O([Sc]=O)[Sc]=O | [CAS DataBase Reference]
12060-08-1(CAS DataBase Reference) | [EPA Substance Registry System]
12060-08-1(EPA Substance) |
| Questions And Answer | Back Directory | [Uses]
Scandium Oxide is applied in optical coating, catalyst, electronic ceramics and laser industry. It is also used annually in making high-intensity discharge lamps. A high melting white solid used in high-temperature systems (for its resistance to heat and thermal shock), electronic ceramics, and glass composition. Suitable for vacuum deposition applications.
| [Structure]
Sc₂O₃ (Scandium oxide) is a Corundum-like structure and crystallizes in the cubic Ia̅3 space group. There are two inequivalent Sc³⁺ sites. In the first Sc³⁺ site, Sc³⁺ is bonded to six equivalent O²⁻ atoms to form a mixture of corner and edge-sharing ScO₆ octahedra. The corner-sharing octahedral tilt angles are 54°. All Sc-O bond lengths are 2.12 Å. In the second Sc³⁺ site, Sc³⁺ is bonded to six equivalent O²⁻ atoms to form a mixture of distorted corner and edge-sharing ScO₆ octahedra. The corner-sharing octahedral tilt angles range from 53-54°. There is a spread of Sc-O bond distances ranging from 2.09-2.17 Å. O²⁻ is bonded to four Sc³⁺ atoms to form a mixture of distorted corner and edge-sharing OSc₄ trigonal pyramids.
|
| Hazard Information | Back Directory | [Chemical Properties]
fine white powder(s) or sintered pieces of 3–12mm; used as an evaporation material of 99.99% purity to produce fairly hard coating which is very stable, and is useful for antireflection coating on semiconductors with high index [MER06] [CER91]
High-purity scandium oxide (i.e., 99.0 to 99.99 wt.% Sc) is an initial raw material used to produce a metallic scandium.
The growth of scandium oxide produces a smooth surface as evident by the AFM RMS roughness of 0.5 to 0.8 nm.The growth rate of the scandium oxide was 0.67nm/min for Tsc=1130℃ and 1.25nm/min for Tsc=1170℃. | [Definition]
Scandium oxide has an extremely high melting point and is therefore likely to be an ionic compound, meaning its particles are joined by ionic bonds.
| [Preparation]
Scandium Oxide, SC2O3: It is obtained readily by heating the salts such as scandium carbonate and scandium nitrate.
Sc2(CO3)3-Heat->Sc2O3+3CO2
4Sc(NO3)3-->2Sc2O3+12NO2+3O2
Scandium oxide is a white powder. It is more basic than aluminium oxide but less basic than calcium oxide. It absorbs carbon dioxide from the air.
It has the MnO3 structure.The crystal structure of scandium oxide is Bixbyite , which is an FCC array of scandium atoms with oxygen occupying 44 of the tetrahedral sites. | [reaction suitability]
core: scandium
reagent type: catalyst | [Solubility in water]
The oxide of scandium is not soluble in water but it can be soluble in hot acids but sometimes it reacts also. But the scandium oxide is amphoteric as if the compound can react with acid as well as a base then the compound is said to be amphoteric.
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