Lanthanum oxide

Lanthanum(III) oxide is a compound of the elements lanthanum [La] and oxygen [O], which belongs to the group of metal oxides.

Lanthanum oxide is a white, fine powder. Similar to calcium oxide, it reacts strongly and exothermically with water to form lanthanum hydroxide. However, it is almost insoluble in water, but readily soluble in inorganic acids.

High-purity lanthanum oxide is often used in the glass industry to make high-quality specialty glasses for optical devices (e.g., camera lenses). For example, all the lenses in the cameras of the first two Mars rovers have lenses made of lanthanum glass. As a La-Pb-Mn catalyst, it is used to clean exhaust gases from car engines and is therefore a ubiquitous part of our daily lives. It is also used to make tungsten electrodes for welding. Otherwise, lanthanum oxide is used to make other lanthanum compounds and pure lanthanum metal.

Lanthanum(III) oxide La2O3 / TREO: 99.9%.
Lanthanum(III) La2O3 / TREO: 99.999%.

Lanthanum oxide
Other Name: Lanthanum Trioxide / Lanthanum Trioxide / Lanthanum Trioxide

Chemical formula: La2O3
Molar mass: 325.81 g.mol 1pc
Physical state: Solid
Density: 6.51 g/cm3
Melting point: 2315°C
Boiling point: 4200°C

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