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Sigma-Aldrich

Scandium(III) oxide

99.9% trace rare earth metals basis

Synonym(s):

Discandium trioxide, Scandia, Scandium oxide, Scandium trioxide

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About This Item

Linear Formula:
Sc2O3
CAS Number:
Molecular Weight:
137.91
EC Number:
MDL number:
UNSPSC Code:
12161600
PubChem Substance ID:
NACRES:
NA.22

Quality Level

Assay

99.9% trace rare earth metals basis

form

powder

reaction suitability

core: scandium
reagent type: catalyst

SMILES string

O=[Sc]O[Sc]=O

InChI

1S/3O.2Sc

InChI key

HYXGAEYDKFCVMU-UHFFFAOYSA-N

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General description

Scandium(III) oxide is a high-melting rare earth oxide that can be used as a catalyst in the dehydration of terminal diols. Furthermore, it is used as a starting material for the preparation of other scandium compounds.

Application

Scandium(III) oxide can be used as a catalyst for the dehydration of amino alcohols to unsaturated amines. It can also be used as a precursor to prepare scandium(III) trifluoromethanesulfonate, which can be used to catalyze the nitration of aromatic compounds.
Suitable for vacuum deposition applications

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Scandium (III) trifluoromethanesulfonate catalyzed aromatic nitration with inorganic nitrates and acetic anhydride
Kawada A, et al.
Chemical & Pharmaceutical Bulletin, 50 (2002)
Dehydration of 5-amino-1-pentanol over rare earth oxides
Ohta K, et al.
Applied Catalysis A: General, 517, 73-80 (2016)
Vapor-phase catalytic dehydration of terminal diols
Abe K, et al.
Catalysis Today, 164, 419-424 (2011)
Ya-Wen Zhang et al.
The journal of physical chemistry. B, 109(39), 18324-18331 (2006-07-21)
Nanostructured scandium hydrous oxides were hydrothermally synthesized at 180 degrees C for 18 h, using NaOH, NH(4)OH, and KOH as the bases. They were characterized by means of X-ray diffraction (XRD), transmission electron microscopy (TEM), N2 adsorption, thermogravimetry and differential
Yu Gong et al.
The journal of physical chemistry. A, 111(45), 11572-11578 (2007-10-18)
The reactions of scandium atoms and O(2) have been reinvestigated using matrix isolation infrared spectroscopy and density functional theory calculations. A series of new oxygen-rich scandium oxide/dioxygen complexes were prepared and characterized. The ground state scandium atoms react with dioxygen

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