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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 by Goodfellow are a highly reactive alkali metal available in pellet form. The metallic luster and low density of potassium make it useful for research and development purposes. Applications of potassium pellets include use as a heat transfer medium in liquid metal cooled nuclear reactors. The high thermal and electrical conductivity of potassium also enables its use in thermoelectric power generation. With their wide selection of elemental metals, Goodfellow's potassium pellets facilitate materials science research and innovation.
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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Zinc Pellets Formula: Zn
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Maximum Lump Size: 10mm
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Zirconium Pellets Formula: Zr
Percentage Purity: 99.2%
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Ytterbium Pellets Formula: Yb
Percentage Purity: 99.9%
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Zinc Sulfide Pellets Formula: ZnS
Percentage Purity: 99.9%
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Woods Metal Pellets Formula: Bi50/Pb25/Cd12.5/Sn12.5
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Yttrium Pellets Formula: Y
Percentage Purity: 99.9%
Maximum Lump Size: 50mm
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