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Cadmium ( Cd )

Material Information

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Foil Lump Powder Rod Single Crystal Sputtering Target Tube Wire
Foil Lump Powder Rod Single Crystal Sputtering Target Tube Wire

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General Description:  

Discovered in 1817 by Friedrich Stromeyer at Göttingen, Germany.

Cadmium is a white metallic element. It is readily accessible as it occurs in concentrated ores and is easily extracted by heating the oxide with carbon and distilling the metal. It has an abundance in the earth's crust of 0.11 ppm. Cadmium has been used in applications as diverse as plating, the manufacture of batteries and as a yellow pigment for paint. However, its high toxicity means that its use is now becoming increasingly restricted.

   

Atomic Properties

Atomic number 48
Atomic radius - Goldschmidt ( nm ) 0.152
Atomic weight ( amu ) 112.41
Crystal structure Hexagonal close packed
Electronic structure Kr 4d1O 5s2
Ionization potential No. eV
1 8.99
2 16.9
3 37.5
Natural isotope distribution Mass No. %
106 1.2
108 0.9
110 12.4
111 12.8
112 24.0
113 12.3
114 28.8
116 7.6
Photo-electric work function ( eV ) 4.0
Thermal neutron absorption cross-section ( Barns ) 2450
Valences shown 2

Electrical Properties

Electrical resistivity @20C ( µOhmcm ) 7.3
Temperature coefficient @0-100C ( K-1 ) 0.0043
Superconductivity critical temperature ( K ) 0.517
Thermal emf against Pt (cold 0C - hot 100C) ( mV ) +0.91

Mechanical Properties

Material condition Cast Polycrystalline
Bulk modulus ( GPa )   51
Hardness - Mohs 2.0
Poisson's ratio   0.3
Tensile modulus ( GPa )   62.6
Tensile strength ( MPa ) 71

Physical Properties

Boiling point ( C ) 765
Density @20C ( g cm-3 ) 8.64
Melting point ( C ) 321

Thermal Properties

Coefficient of thermal expansion @0-100C ( x10-6 K-1 ) 31.0
Latent heat of evaporation ( J g-1 ) 886
Latent heat of fusion ( J g-1 ) 57
Specific heat @25C ( J K-1 kg-1 ) 232
Thermal conductivity @0-100C ( W m-1 K-1 ) 96.9

Buy Cadmium on-line

We stock and supply the following standard forms:
Foil Lump Powder Rod Single Crystal Sputtering Target Tube Wire
Foil Lump Powder Rod Single Crystal Sputtering Target Tube Wire

Choose a form to search our on-line catalog  

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