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Lanthanum oxide is La2O3, an inorganic compound containing the rare earth element lanthanum and oxygen.
L 1267 (OTTO) Lanthanum oxide, 99.9% Cas 1312-81-8 - used for vacuum deposition. It is also acts as a precursor to LAMOX fast ion conductors. It is also employed in the manufacture of special alloys, optical glass and refractory materials.