Specifications Table

Product Name – LANTHANUM OXIDE 99.9% AR
Quantity/Pack Size – 100 g, 500 g
Form – White Powder
Grade – 99.9% AR
Application – Ceramics, Glass Additives, Catalysts, Optical Coatings

Product Overview

Lanthanum oxide (La?O?) 99.9% AR grade is a high-purity rare earth oxide known for its exceptional thermal stability, chemical inertness, and optical properties. This ultra-fine white powder is synthesized through advanced purification processes to ensure minimal impurities, making it highly reliable for precision applications. Its high refractive index and low absorption in the visible spectrum make it a preferred material in optical coatings, where it enhances light transmission and durability. In ceramic formulations, lanthanum oxide acts as a fluxing agent, improving sintering behavior and mechanical strength without compromising transparency. The material also exhibits excellent catalytic activity, particularly in petroleum refining and automotive emission control systems, where it stabilizes catalysts under high-temperature conditions. Its hygroscopic nature requires careful handling and storage in airtight containers to prevent moisture absorption, which could alter its reactivity. Compatible with most inorganic solvents and resistant to thermal degradation up to 2000?C, this AR-grade lanthanum oxide is engineered for consistency, ensuring reproducible results in research and industrial processes. The 99.9% purity level guarantees minimal trace metal contamination, critical for applications demanding high chemical precision, such as in the production of specialty glasses or electronic ceramics.

FAQs

1. What is the particle size distribution of this lanthanum oxide powder?

The powder typically features a fine particle size ranging between 1-5 microns, optimized for uniform dispersion in ceramic slurries and optical coatings. For specific batch data, refer to the certificate of analysis provided with your order.

2. Can this lanthanum oxide be used in high-temperature furnace applications?

Yes, lanthanum oxide 99.9% AR maintains structural integrity up to 2000?C, making it suitable for crucibles, refractory linings, and thermal barrier coatings in furnace environments. Avoid abrupt thermal shocks to prevent cracking.

3. How does this compare to lanthanum oxide 99.5% purity?

The 99.9% AR grade offers significantly lower trace metal impurities (e.g., <10 ppm Fe, <5 ppm Si), which is critical for optical clarity and catalytic performance. The 99.5% grade may suffice for general ceramic uses but lacks the precision required for advanced applications.

4. What precautions should be taken during storage to prevent degradation?

Store in a desiccator or sealed container with silica gel to minimize moisture exposure, as lanthanum oxide is highly hygroscopic. Keep away from CO?-rich environments to avoid carbonate formation, which can alter its reactivity.

5. Is this product compatible with sol-gel processing for thin-film deposition?

Yes, the high purity and consistent particle size make it ideal for sol-gel synthesis. Pre-dissolve in nitric acid or acetic acid (with heating) to form a stable precursor solution for spin-coating or dip-coating applications.