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Merck
CN

L4000

Lanthanum(III) oxide

≥99.9%

Synonym(s):

Dilanthanum trioxide, Lanthana, Lanthanum sesquioxide, Lanthanum trioxide

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About This Item

Linear Formula:
La2O3
CAS Number:
1312-81-8
Molecular Weight:
325.81
NACRES:
NA.23
PubChem Substance ID:
57654328
UNSPSC Code:
12352303
EC Number:
215-200-5
MDL number:
MFCD00011071

Key Documents

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Product Name

Lanthanum(III) oxide, ≥99.9%

InChI key

KTUFCUMIWABKDW-UHFFFAOYSA-N

InChI

1S/2La.3O

SMILES string

O=[La]O[La]=O

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

Quality Level

200

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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

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.

Storage Class

13 - Non Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
0000521041
0000521043
0000521043
0000521041
0000510528

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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
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
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
Lukas C Gerber et al.
Chemical communications (Cambridge, England), 48(32), 3869-3871 (2012-03-14)
Lanthanum oxide nanoparticles were utilized to scavenge phosphate from microbial growth media for the use of targeted nutrient starvation as an antimicrobial strategy. Only in phosphate poor environments a toxic effect was observed. The effect was shown on Escherichia coli
A A Nogiwa-Valdez et al.
Acta biomaterialia, 9(4), 6226-6235 (2012-12-12)
Zirconia has been used as an orthopaedic material since 1985 and is increasingly used in dental applications. One major concern with the use of zirconia is the significant loss in mechanical properties through hydrothermal degradation, with the uncontrolled transformation of
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