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L4000

Sigma-Aldrich

Lanthanum(III) oxide

≥99.9%

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Synonym(s):
Lanthana, Lanthanum sesquioxide, Lanthanum trioxide
Linear Formula:
La2O3
CAS Number:
Molecular Weight:
325.81
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

Quality Level

Assay

≥99.9%

form

powder

reaction suitability

reagent type: catalyst
core: lanthanum

density

6.51 g/mL at 25 °C (lit.)

application(s)

battery manufacturing

SMILES string

O=[La]O[La]=O

InChI

1S/2La.3O

InChI key

KTUFCUMIWABKDW-UHFFFAOYSA-N

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This Item
634271289205203556
Lanthanum(III) oxide ≥99.9%

Sigma-Aldrich

L4000

Lanthanum(III) oxide

Lanthanum(III) oxide nanopowder, <100 nm particle size (TEM), 99% trace metals basis

Sigma-Aldrich

634271

Lanthanum(III) oxide

Lanthanum(III) oxide suitable for AAS, ≥99.9%

Supelco

289205

Lanthanum(III) oxide

Lanthanum(III) oxide 99.999% trace metals basis

Sigma-Aldrich

203556

Lanthanum(III) oxide

form

powder

form

nanopowder

form

powder

form

powder

density

6.51 g/mL at 25 °C (lit.)

density

6.51 g/mL at 25 °C (lit.)

density

6.51 g/mL at 25 °C (lit.)

density

6.51 g/mL at 25 °C (lit.)

reaction suitability

reagent type: catalyst
core: lanthanum

reaction suitability

reagent type: catalyst
core: lanthanum

reaction suitability

reagent type: catalyst
core: lanthanum

reaction suitability

reagent type: catalyst
core: lanthanum

application(s)

battery manufacturing

application(s)

-

application(s)

-

application(s)

battery manufacturing

General description

La2O3 is a wide band gap p-type semiconductor also called lanthanum sesquioxide. It is the only lanthanide oxide with an empty Ln-4f shell and is widely used to prepare optical materials, dielectrics, and conductive ceramics. La2O3 can also be used as a catalyst in many organic transformations.

Application

Lanthanum(III) oxide improves the alkali resistance of the glass and because of its high refractive index and low dispersion, it is widely used in the preparation of camera and telescope lenses, infrared-absorbing glasses, and other special optical fibers. For example, it can be used as a starting material to prepare La2O3-CaO-B2O3-SiO2 glass for diagnosis X-ray shielding.

It can be used to prepare thermal-barrier coatings with a high thermal expansion coefficient and low thermal conductivity.

It can also be used as a recyclable catalytic system for the synthesis of diphenyl sulfides and selenides.
Precursor to LAMOX fast ion conductors and superconductors.

Features and Benefits

  • High refractive index
  • Thermal stability
  • Hardness
  • High dielectric constant

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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Anita J Vincent-Johnson et al.
Journal of physics. Condensed matter : an Institute of Physics journal, 25(3), 035901-035901 (2012-12-12)
Upon excitation in thin oxide films by infrared radiation, radiative polaritons are formed with complex angular frequency ω, according to the theory of Kliewer and Fuchs (1966 Phys. Rev. 150 573). We show that radiative polaritons leak radiation with frequency
Tiziano Montini et al.
ChemSusChem, 3(5), 619-628 (2010-04-28)
Glycerol is the main byproduct of biodiesel production and its increased production volume derives from the increasing demand for biofuels. The conversion of glycerol to hydrogen-rich mixtures presents an attractive route towards sustainable biodiesel production. Here we explored the use
Hyun Ju Park et al.
Bioresource technology, 101 Suppl 1, S83-S85 (2009-07-29)
Fast pyrolysis of sewage sludge was carried out under different reaction conditions, and its effects on bio-oil characteristics were studied. The effect of metal oxide catalysts on the removal of chlorine in the bio-oil was also investigated for four types
Lixia Wang et al.
Journal of hazardous materials, 196, 342-349 (2011-09-29)
This investigation was to increase the adsorption capacity of magnetite for Congo red (CR) by adulterating a small quantity of La(3+) ions into it. The adsorption capability of nanocrystalline Fe(3-x)La(x)O(4) (x=0, 0.01, 0.05, 0.10) ferrite to remove CR from aqueous
Lili Liu et al.
Journal of nanoscience and nanotechnology, 11(3), 2155-2162 (2011-04-01)
La2O3-CeO2 nanopowders with different La2O3 (0-20 mol%) were prepared by the sol-gel method. The modification of the cubic structure of ceria by substituting La3+ for Ce4+ into the lattice of CeO2 has been investigated. The crystal structure of La2O3-CeO2 nanomaterials

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