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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.
Technical Data Sheet Safety Data Sheet Tolerance Properties

Flammable

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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

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