Overview
Lanthanum Oxide (La2O3) is a rare earth compound with significant industrial applications. It is derived from lanthanum, a soft, malleable metal found in minerals like monazite and bastnäsite. The oxide form is highly stable and exhibits unique properties, making it valuable in advanced technologies. Due to its high refractive index and thermal stability, Lanthanum Oxide is a key component in optical glasses, including camera lenses and fiber optics. Its catalytic properties also make it useful in petroleum refining and automotive exhaust systems.
Physical and Chemical Properties
Lanthanum Oxide is a white, crystalline powder with a high melting point of 2315°C and a boiling point of 4200°C. Its density is 6.51 g/cm³, and it is insoluble in water but dissolves in acids, forming lanthanum salts. The compound is known for its thermal and chemical stability, which allows it to withstand extreme conditions. Its high refractive index (approximately 1.95) makes it ideal for optical applications. Additionally, it exhibits strong basicity, reacting with acids to form salts and water.
Main Applications
Lanthanum Oxide is widely used in the production of optical glasses, where it improves refractive index and dispersion properties. It is also a critical component in catalysts for petroleum refining and automotive catalytic converters, reducing harmful emissions. In electronics, it serves as a dielectric material in capacitors and semiconductors. The compound is also used in phosphors for lighting and displays, enhancing brightness and color quality. Other applications include ceramics, where it improves thermal and mechanical properties.
Safety and Storage
Lanthanum Oxide is generally stable but should be handled with care to avoid inhalation or skin contact. Prolonged exposure may cause irritation to the respiratory tract and skin. Personal protective equipment (PPE), such as gloves and masks, is recommended. Storage should be in a cool, dry place, away from moisture and acids, to prevent degradation. Containers must be tightly sealed to avoid contamination. In case of spillage, use appropriate absorbents and dispose of according to local regulations.
B2B Procurement Guide
When procuring Lanthanum Oxide, prioritize suppliers with a proven track record in rare earth chemicals. Verify the purity level (typically 99.9% or higher for optical and electronic applications) through certificates of analysis. Consider the form (powder or pellets) based on your application needs. Bulk purchases may offer cost savings, but ensure proper storage facilities are available. Prices vary widely ($50-$200 per kg), so request quotes from multiple suppliers and factor in logistics and handling costs.
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