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Formula: K
Form: Pellet/Lump
Material: Potassium
CAS Number: 7440-09-7
Commodity: Metals
Purity: 99.97%
Maximum Lump Size: 25mm
Potassium Pellets provide high chemical reactivity, excellent reducing capability, and low density, making them critical for specialized chemical synthesis, metallurgy, and vacuum applications. Their strong affinity for oxygen and water enables use in oxygen scavenging systems, alkali metal-based catalysts, and reduction reactions in inorganic chemistry. Industries such as specialty chemicals, electronics, and advanced materials manufacturing employ potassium pellets in getter systems, desiccants for high-purity environments, and synthesis of organopotassium compounds. In research, they are used to explore alkali metal reactivity, reaction kinetics in metal-catalyzed processes, and thin-film deposition methods. The pellets’ combination of reactivity, low mass, and high energy potential ensures a valuable role in advanced chemical and materials science contexts.
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Tolerances

Pellet/Lump
Maximum Lump Size Nominal

Material Properties for Metals

Atomic Properties
Element Value
Atomic number 19
Crystal structure Body centred cubic
Electronic structure Ar 4s¹
Valences shown 1
Atomic weight( amu ) 39.0983
Thermal neutron absorption cross-section( Barns ) 1.8
Photo-electric work function( eV ) 2.2
Natural isotope distribution( Mass No./% ) 40/ 0.01
Natural isotope distribution( Mass No./% ) 39/ 93.26
Natural isotope distribution( Mass No./% ) 41/ 6.73
Atomic radius - Goldschmidt( nm ) 0.238
Ionisation potential( No./eV ) 2/ 31.6
Ionisation potential( No./eV ) 4/ 60.9
Ionisation potential( No./eV ) 1/ 4.34
Ionisation potential( No./eV ) 5/ 82.7
Ionisation potential( No./eV ) 3/ 45.7
Ionisation potential( No./eV ) 6/ 100
Mechanical Properties
Element Value
Hardness - Mohs 0.5
Material condition Polycrystalline @ -190C
Poisson's ratio 0.35
Bulk modulus( GPa ) 3.1
Tensile modulus( GPa ) 3.53
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 6.8@20@20°C
Temperature coefficient( K⁻¹ ) 0.0057@0-100°C
Physical Properties
Element Value
Boiling point( C ) 760
Density( gcm⁻³ ) 0.86@20°C
Thermal Properties
Element Value
Melting point( C ) 63.25
Latent heat of evaporation( J g⁻¹ ) 2033
Latent heat of fusion( J g⁻¹ ) 61
Specific heat( J K⁻¹ kg⁻¹ ) 753@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 102.5@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 83@0-100°C

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