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Lanthanum
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relevance
Due to the special technological and operational qualities, Lantana is widely used in modern optics, electronics, ceramic production. Using such materials of new generation have the opportunity to improve technological processes of production and to ensure long term reliable operation of the whole complex of equipment. Lanthanum and its analogues are used in the production of lighting equipment, lasers, television equipment. Also the lanthanides are used in the production of heat-resistant ceramics, which is characterized by extreme refractoriness. Valuable qualities Lantana today is still not fully used. The most promising areas of optical devices and sensors. Most often this industry uses lanthanum oxide as a component of optical glasses. Another area of application of the oxides of the lanthanides is abrasives for polishing. For example, the well-known powder «polirit» contains an oxide of lanthanum.
properties
Lanthanum — a silvery metal covered with the oxide film, leading a number of the 14 lanthanides in the periodic table, similar in physical-chemical properties and applications. In normal conditions, it does not change — the oxide film protects it from oxidation, in contact with hot condensate, it forms a hydroxide of medium strength. Industrially, chemically pure lanthanum is produced from bastnesite and monazite.
Physical quality La | |
---|---|
Atomic (molar) mass, g/mol | 139 |
The degree of oxidation | 3 |
Density [g/cm3] | 6,17 |
The melting temperature t°C | 920°C |
The heat of fusion kJ/mol | 8,5 |
The thermal conductivity K [W/(m·K)] | 13,4 |
Heat of evaporation kJ/mol | 402 |
buy at best price
The cost of rare earth metals, is based bets on the London stock exchange of nonferrous metals. A large variety of products in stock, LLC «_" will allow any buyer to make the optimal choice. High quality products, full compliance with the requirements of the state normative documents and technical conditions for the supply — the main criterion, which adheres to our company in working with clients. OOO «_" is a reliable partner in the metal market, and the exact conformity to the declared characteristics of the products, reasonable prices and convenient delivery method is the additional benefit of working with us.