Lanthanum Powder

Formula: La

Form: Powder

Material: Lanthanum

CAS Number: 7439-91-0

Commodity: Metals

Purity: 99.9%

Max Particle Size: 400μm

Hazard Pictogram: GHS02

Lanthanum Powder offers the rare earth element lanthanum. Available in a pure powder form, it has a shiny silver-white appearance and is highly reactive. With its unique magnetic, electrical, optical and catalytic properties, it’s used in optical glass, camera lenses and nickel metal hydride batteries. Lanthanum powder is also used as a cracking catalyst in oil refining. We offer 2 variations of high purity Lanthanum Powder for advanced materials research and development applications.

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Technical Data Sheet Tolerance Properties

Flammable

each

Tolerances

Powder

Mean Particle Size		Nominal
Minimum Particle Size		Nominal
Maximum Particle Size		Nominal
Maximum Particle Size		Nominal
Particle Size D10		Nominal
Particle Size D50		Nominal
Particle Size D90		Nominal

Material Properties for Metals

Atomic Properties

Element	Value
Atomic number	57
Crystal structure	Hexagonal close packed/Face centred cubic
Electronic structure	Xe 5d¹ 6s²
Valences shown	3
Atomic weight( amu )	138.9055
Thermal neutron absorption cross-section( Barns )	8.9
Photo-electric work function( eV )	3.5
Natural isotope distribution( Mass No./% )	139/ 99.91
Natural isotope distribution( Mass No./% )	138/ 0.09
Atomic radius - Goldschmidt( nm )	0.187
Ionisation potential( No./eV )	3/ 19.18
Ionisation potential( No./eV )	1/ 5.58
Ionisation potential( No./eV )	2/ 11.06

Mechanical Properties

Element	Value
Material condition	Polycrystalline
Poisson's ratio	0.28
Bulk modulus( GPa )	24.8
Tensile modulus( GPa )	37.9
Hardness - Vickers( kgf mm⁻² )	40
Tensile strength( MPa )	131
Yield strength( MPa )	124

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	57@20@20°C
Superconductivity critical temperature( K )	4.88
Temperature coefficient( K⁻¹ )	0.00218@0-100°C

Physical Properties

Element	Value
Boiling point( C )	3457
Density( gcm⁻³ )	6.174@20°C

Thermal Properties

Element	Value
Melting point( C )	921
Latent heat of evaporation( J g⁻¹ )	2897
Latent heat of fusion( J g⁻¹ )	60.2
Specific heat( J K⁻¹ kg⁻¹ )	197@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )	13.4@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	4.9@0-100°C