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Sigma-Aldrich

Lanthanum(III) oxide

99.99% trace metals basis

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Synonym(s):
Dilanthanum trioxide, Lanthanum oxide, Lanthanum trioxide, Lanthanum(3+) oxide
Linear Formula:
La2O3
CAS Number:
1312-81-8
Molecular Weight:
325.81
EC Number:
215-200-5
MDL number:
MFCD00011071
PubChem Substance ID:
24851945
NACRES:
NA.23

Assay

99.99% trace metals basis

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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General description

La2O3 is a wide band gap p-type semiconductor 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 can be used as a dopant to prepare radiation-shielding glasses. For example, it can be added to waste soda-lime glass to improve the linear attenuation coefficient and radiation shielding characteristics of the glass.

It can be used as a recyclable catalytic system for the synthesis of diphenyl sulfides and selenides and for the C-N cross-coupling of aryl halides with heteroaromatic amines.

It can also be used as a promoter or support material for the selective oxidation of methanol over gold catalyst.
Precursor to LAMOX fast ion conductors and superconductors.

Features and Benefits

  • High refractive index
  • Low dispersion
  • Colorless in the glass matrix
  • Efficient, inexpensive, and recyclable catalyst

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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Ling Zhang et al.
Journal of hazardous materials, 190(1-3), 848-855 (2011-05-03)
Phosphate removal from wastewater is very important for the prevention of eutrophication. Adsorption of phosphate from water was investigated using activated carbon fiber loaded with lanthanum oxide (ACF-La) as a novel adsorbent. The effects of variables (La/ACF mass ratio, impregnation
A K Singh et al.
Optics letters, 37(5), 776-778 (2012-03-02)
Low-power-threshold cw laser-induced incandescence (CWLII) has been observed in La(2)O(3):Er(3+)-Yb(3+) phosphor on excitation by a 976 nm IR laser. It is suggested that incandescence originates from the extensive heating induced by the nonradiative processes taking place following the laser excitation.
Jinhua Mao et al.
Journal of physics. Condensed matter : an Institute of Physics journal, 23(33), 336001-336001 (2011-08-04)
The static and dynamic features of magnetization have been investigated in terms of dc magnetization, ac susceptibility, and memory effects on single-layered perovskite La(0.7)Sr(1.3)CoO(4). The results indicate that short-range ferromagnetic clusters coexist with the glassy magnetic state, i.e., a cluster-glass
A J Barón-González et al.
Journal of physics. Condensed matter : an Institute of Physics journal, 23(49), 496003-496003 (2011-11-24)
The origin of dielectric anomalies and magnetodielectric response of La(2)MnCoO(6) has been investigated by means of ultra-high resolution synchrotron x-ray powder diffraction, neutron powder diffraction, resistivity, magnetization and dielectric measurements. The study has been performed on two different bulk samples
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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