L4000

Lanthanum(III) oxide

≥99.9%

• Szinonimák: Lanthana, Lanthanum sesquioxide, Lanthanum trioxide
• Lineáris képlet: La₂O₃
• CAS-szám: 1312-81-8
• Molekulatömeg: 325.81
• EC-szám: 215-200-5
• MDL-szám: MFCD00011071
• UNSPSC kód: 12352303
• PubChem Substance ID: 57654328
• NACRES: NA.23

Tulajdonságok

• Minőségi szint: 200
• Teszt: ≥99.9%
• form: powder
• reakcióalkalmasság: reagent type: catalyst; core: lanthanum
• sűrűség: 6.51 g/mL at 25 °C (lit.)
• alkalmazás(ok): battery manufacturing
• SMILES string: O=[La]O[La]=O
• InChI: 1S/2La.3O
• Nemzetközi kémiai azonosító kulcs: KTUFCUMIWABKDW-UHFFFAOYSA-N

Leírás

Általános leírás

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.

Alkalmazás

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.

Tulajdonságok és előnyök

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

Biztonsági adatok

• Tárolási osztály kódja: 13 - Non Combustible Solids
• WGK: WGK 3
• Lobbanási pont (F): Not applicable
• Lobbanási pont (C): Not applicable
• Egyéni védőeszköz: dust mask type N95 (US), Eyeshields, Gloves