L4000

Lanthanum(III) oxide

≥99.9%

• Synonym(s): Lanthana, Lanthanum sesquioxide, Lanthanum trioxide
• Linear Formula: La₂O₃
• CAS Number: 1312-81-8
• Molecular Weight: 325.81
• EC Number: 215-200-5
• MDL number: MFCD00011071
• UNSPSC Code: 12352303
• PubChem Substance ID: 57654328
• NACRES: NA.23

Properties

• 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

Description

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

Safety Information

• 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