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Formula: Rb
Form: Pellets
Material: Rubidium
CAS Number: 7440-17-7
Commodity: Metals
Purity:
99.9%
Maximum Lump Size:
5mm
Hazard Pictogram:
GHS02,GHS05
Rubidium Pellets are a highly reactive material offered within Goodfellow's extensive range of pellet products. Rubidium has a low melting point and is extremely soft, with a Mohs hardness of just 0.3. The ductile metal is readily oxidized in air and vigorously reacts with water to liberate hydrogen. Rubidium pellets find use in specialized vacuum tubes as "getters" to remove residual gases. They also serve as alkali metal dispensers in ultra-high vacuum systems. With their unique properties, Rubidium Pellets enable advanced applications across industries.
Flammable
Corrosive
Tolerances
Pellets
| Maximum Lump Size | Nominal |
|---|
Material Properties for Metals
Atomic Properties
| Element | Value |
|---|---|
| Atomic number | 37 |
| Crystal structure | Body centred cubic |
| Electronic structure | Kr 5s¹ |
| Valences shown | 1,2,3,4 |
| Atomic weight( amu ) | 85.4678 |
| Thermal neutron absorption cross-section( Barns ) | 0.5 |
| Photo-electric work function( eV ) | 2.1 |
| Natural isotope distribution( Mass No./% ) | 85/ 72.17 |
| Natural isotope distribution( Mass No./% ) | 87/ 27.83 |
| Atomic radius - Goldschmidt( nm ) | 0.251 |
| Ionisation potential( No./eV ) | 4/ 52.6 |
| Ionisation potential( No./eV ) | 6/ 84.4 |
| Ionisation potential( No./eV ) | 3/ 40.0 |
| Ionisation potential( No./eV ) | 1/ 4.18 |
| Ionisation potential( No./eV ) | 2/ 27.3 |
| Ionisation potential( No./eV ) | 5/ 71.0 |
Mechanical Properties
| Element | Value |
|---|---|
| Hardness - Mohs | 0.3 |
| Material condition | Polycrystalline |
| Poisson's ratio | 0.3 |
| Bulk modulus( GPa ) | 2.5 |
| Tensile modulus( GPa ) | 2.35 |
Electrical Properties
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 12.1@20@20 |
| Temperature coefficient( K⁻¹ ) | 0.0048@0-100°C |
Physical Properties
| Element | Value |
|---|---|
| Boiling point( C ) | 686 |
| Density( gcm⁻³ ) | 1.532@20 |
Thermal Properties
| Element | Value |
|---|---|
| Melting point( C ) | 38.89 |
| Latent heat of evaporation( J g⁻¹ ) | 887 |
| Latent heat of fusion( J g⁻¹ ) | 25.7 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 360@25°C |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 58.2@0-100 |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 9@0-100 |