What is lanthanum?

  • (noun): A white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth.
    Synonyms: La, atomic number 57


Lanthanum is a chemical element with the symbol La and atomic number 57. Lanthanum is a silvery white metallic element that belongs to group 3 of the periodic table and is the first element of the lanthanide series. It is found in some rare-earth minerals, usually in combination with cerium and other rare earth elements. Lanthanum is a malleable, ductile, and soft metal that oxidizes rapidly when exposed to air. It is produced from the minerals monazite and bastnäsite using a complex multistage extraction process. Lanthanum compounds have numerous applications as catalysts, additives in glass, carbon lighting for studio lighting and projection, ignition elements in lighters and torches, electron cathodes, scintillators, and others. Lanthanum carbonate (La2(CO3)3) was approved as a medication against renal failure.

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Some articles on lanthanum:

Lanthanum Strontium Cobalt Ferrite
... Lanthanum strontium cobalt ferrite (LSCF), also called lanthanum strontium cobaltite ferrite is a ceramic material of the ferrite group ... It is a mixture of lanthanum(III) oxide, strontium oxide, cobalt oxide and iron oxide (cobalt iron oxide) ...
Lanthanum - Precautions
... Lanthanum has a low to moderate level of toxicity and should be handled with care ... In animals, the injection of lanthanum solutions produces hyperglycaemia, low blood pressure, degeneration of the spleen and hepatic alterations ...
Glossary Of Fuel Cell Terms - L - Lanthanum Carbonate
... Lanthanum carbonate is used as a lanthanum source for solid-state production of lanthanum strontium manganite (LSM), primarily for solid oxide fuel cell applications ...
Lanthanum(III) Bromide
... Lanthanum(III) bromide (LaBr3) is an inorganic halide salt of lanthanum ... It is often used as a source of lanthanum in chemical synthesis, and is being evaluated for use as a scintillation material in certain applications ...
Lanthanum(III) Chloride - Uses
... Lanthanum chloride does not enjoy many applications ... Lanthanum chloride is also used in biochemical research to block the activity of divalent cation channels, mainly calcium channels ... In organic synthesis, lanthanum trichloride functions as a mild Lewis acid for converting aldehydes to acetals ...