Optical Glass Lanthanum Oxide CAS 1312-81-8 Ceramic Capacitor La2o3 Powder

Lanthanum Oxide (La₂O₃): Optical Glass, Ceramic Capacitors, Catalysts, Ferroelectrics, Pharma Material

Lanthanum oxide is an inorganic compound with the chemical formula La2O3, appearing as a white powder. It is soluble in acids, ethanol, and ammonium chloride but insoluble in water and ketones. As a rare earth material, lanthanum oxide has extremely wide applications and plays a significant role in glass, ceramics, electronics, and other fields.

Applications

1. Primarily used in manufacturing special alloys, precision optical glass, and high-refractive-index optical fiber panels, making it suitable for camera, microscope, and high-end optical instrument lenses.
2. Also used in producing ceramic capacitors, piezoelectric ceramic additives, and X-ray luminescent materials such as lanthanum oxybromide powder.
3. Serves as a catalyst for various chemical reactions.
4. Improves the temperature dependence and dielectric properties of ferroelectric materials like barium titanate (BaTiO3) and strontium titanate (SrTiO3).
5. Acts as a key raw material in the pharmaceutical industry for lanthanum carbonate chewable tablets.

Product Series

Health and Safety Information

Packaging Specifications

• Standard packaging: 50 kg/drum, 500 kg/pallet, ton bags
• Sample packaging: 500 g/bag, 1 kg/bottle

Production Process

Lanthanum oxide is obtained through solvent extraction separation using a P350-kerosene system with 35–38 extraction stages to isolate lanthanum from other rare earth elements. The lanthanum-containing raffinate is neutralized with ammonia, precipitated with oxalic acid, filtered, and calcined to yield the final La2O3 product. It can also be produced by calcining lanthanum carbonate or lanthanum nitrate, or by thermally decomposing lanthanum oxalate.

Additional Notes

• Lanthanum oxalate or carbonate is heated in a crucible at temperatures above 840°C for 3 hours to decompose into lanthanum oxide.
• It readily dissolves in acids to form corresponding salts.
• When exposed to air, it absorbs carbon dioxide and moisture, gradually converting to lanthanum hydroxide.
• Calcined lanthanum oxide reacts exothermically with water.