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Formula: Ba
Form: Pellet/Lump
Material: Barium
CAS Number: 7440-39-3
Commodity: Metals
Purity:
99%
Maximum Lump Size:
25mm
Hazard Pictogram:
GHS02
Barium pellets are part of Goodfellow's range of pellets for scientific research and industrial applications. Barium has a high density and low melting point. The pellets can be melted and cast into custom shapes. They also have high electrical conductivity and are used as getter material in vacuum tubes. The purity and consistent size of the barium pellets from Goodfellow make them ideal for repeatable experiments in labs. Their properties also make barium pellets useful for radiation shielding and as alloying elements.
Flammable
Tolerances
Pellet/Lump
| Maximum Lump Size | Nominal |
|---|
Material Properties for Metals
Atomic Properties
| Element | Value |
|---|---|
| Atomic number | 56 |
| Crystal structure | Body centred cubic |
| Electronic structure | Xe 6s² |
| Valences shown | 2 |
| Atomic weight( amu ) | 137.33 |
| Thermal neutron absorption cross-section( Barns ) | 1.2 |
| Photo-electric work function( eV ) | 2.5 |
| Natural isotope distribution( Mass No./% ) | 135/ 6.6 |
| Natural isotope distribution( Mass No./% ) | 130/ 0.1 |
| Natural isotope distribution( Mass No./% ) | 136/ 7.9 |
| Natural isotope distribution( Mass No./% ) | 138/ 71.7 |
| Natural isotope distribution( Mass No./% ) | 132/ 0.1 |
| Natural isotope distribution( Mass No./% ) | 137/ 11.2 |
| Natural isotope distribution( Mass No./% ) | 134/ 2.4 |
| Atomic radius - Goldschmidt( nm ) | 0.224 |
| Ionisation potential( No./eV ) | 1/ 5.21 |
| Ionisation potential( No./eV ) | 2/ 10.0 |
Mechanical Properties
| Element | Value |
|---|---|
| Material condition | Polycrystalline |
| Poisson's ratio | 0.28 |
| Bulk modulus( GPa ) | 9.7 |
| Tensile modulus( GPa ) | 12.8 |
Physical Properties
| Element | Value |
|---|---|
| Boiling point( C ) | 1640 |
| Density( gcm⁻³ ) | 3.5@20°C |
Thermal Properties
| Element | Value |
|---|---|
| Melting point( C ) | 725 |
| Latent heat of evaporation( J g⁻¹ ) | 1100 |
| Latent heat of fusion( J g⁻¹ ) | 55.8 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 192@25°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 18@0-100°C |
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