ZLX Tech | Lanthanum

Special formed

Lanthanum

Formula: La

Alias / Keywords: Lanthanum Rod, Lanthanum Metal Rod, La Rod, La Metal Rod, Lanthanum Tube, Lanthanum Metal Tube, La Tube, La Metal Tube, Lanthanum Circle, Lanthanum Metal Circle, La Circle, La Metal Circle, Lanthanum Plate, Lanthanum Metal Plate, La Plate, La Metal Plate, Lanthanum Disc, Lanthanum Metal Disc, La Disc, La Metal Disc, Lanthanum Sheet, Lanthanum Metal Sheet, La Sheet, La Metal Sheet, Lanthanum Foil, Lanthanum Metal Foil, La Foil, La Metal Foil, Lanthanum Wire, Lanthanum Metal Wire, La Wire, La Metal Wire, Lanthanum Bar, Lanthanum Metal Bar, La Bar, La Metal Bar, Lanthanum Powder, Lanthanum Metal Powder, La Powder, La Metal Powder, Lanthanum Block, Lanthanum Metal Block, La Block, La Metal Block, Lanthanum Cubit, Lanthanum Metal Cubit, La Cubit, La Metal Cubit, Lanthanum Crucible, Lanthanum Metal Crucible, La Crucible, La Metal Crucible

Item no.: 931057

Inquiry

Lanthanum is one of the most reactive of the rare-earth metals. It oxidises rapidly when exposed to air. Cold water attacks lanthanum slowly, and hot water attacks it much more rapidly. The metal reacts directly with elemental carbon, nitrogen, boron, selenium, silicon, phosphorus, sulphur, and with halogens. It is a component of, misch metal. And Lanthanum Metal is the very important raw materials in producing Hydrogen Storage Alloys for NiMH batteries, and is also used to produce other pure Rare Earth metals and specialty alloys.

[Bohr Model of Lanthanum]

Atomic Volume: 22.5W/D
Boiling Point: 3464°C
Compressibility: 4.04x10^-6cm²/kg
Covalent Radius: 1.69Angstroms
Crystal Structure: Hexagonal
Density: 6.17g/cm³
Electrical Resistivity (298°K): 79.8μΩ-cm
Electronegativity: 1.1Pauling's
First Ionization Energy:129K-cal/g-mole
Heat of Fusion: 1.5k-cal/g-atom
Heat of Vaporization: 96K-cal/g-atom
Magnetic Moment: 0.49Bohr magnetons
Magnetic Susceptibility: 101x10^-6emu
Melting Point: 920°C
Specific Heat (25°C): 0.045cal/g°C
Standard Electrode Pontential:+2.4volts
Tensile Strength:18,900psi
Thermal Conductivity: 0.033cal/cm²/s/°C
Thermal Neutron Cross Section: 8.9barns/atom
Yield Strength:18,200psi

Applications

Lanthanum is one of the rare chemicals, that can be found in houses in equipment such as colour televisions, fluorescent lamps, energy-saving lamps and glasses. All rare chemicals have comparable properties. La2O2 is used to make special optical glasses (infrared adsorbing glass, camera and telescope lenses). If added in small amounts it improves the malleability and resistence of steel. Lanthanum is used as the core material in Carbon arc electrodes. Lanthanum salts are included in the zeolite catalysts used in petroleum refining because thay stabilize the zeolite at high temperatures.

Lanthanium in the environment

Lanthanum can rarely be found in nature, as it occurs in very small amounts. It is anyway one of the more abundant rare-earch elements. Lanthanum is usually found only in two different kinds of ores. World production of Lanthanum oxide in around 12.000 tonnes per year, and currently nown reseves of Lanthanum are around 6 million tonnes.

The use of Lanthanum is still growing, due to the fact that it is suited to produce catalysers and to polish glass.

Health effects of Lanthanum

Lanthanum is mostly dangerous in the working envIronment, due to the fact that damps and gasses can be inhaled with air. This can cause lung embolisms, especially during long-term exposure. Lanthanum can also cause cancer with humans, as it enlarges the chances of lung cancer when it is inhaled. Finally, it can be a threat to the liver when it accumulates in the human body.

Environmental effects of Lanthanum

Lanthanum is dumped in the environment in many different places, mainly by petrol-producing industries. It can also enter the environment when household equipment is thrown away. Lanthanum will gradually accumulate in soils and water soils and this will eventually lead to increasing concentrations in humans, animals and soil particles.

With water animals Lanthanum causes damage to cell membranes, which has several negative influences on reproduction and on the functions of the nervous system. It strongly accumulates in mussels.

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