Contact Vanitec
Tel: +44 (0)1959 563400
Fax: +44 (0)1959 562563
E-mail: info@vanitec.org
Vanitec Limited,
Winterton House, High Street, Westerham, Kent TN16 1AQ, England
Reg No. 06490949
Environmental Properties
Biological
Essential to life for some species.
Levels in humans
Muscle: 0.02ppm
Bone: 0.0035ppm
Blood: <0.0002 mg dm-3
Daily intake: 0.04mg
Geological
Earth's crust: 160 ppm
Sea water
Atlantic surface: 1.1 x 10-3 ppm
Atlantic deep: n.a.
Pacific surface: 1.6 x 10-3 ppm
Pacific deep: 1.8 x 10-3 ppm
Atomic Characteristics
Unit cell: b.c.c. lm3m a = 0.302 nm
Co-ordination: 8
Atomic number: 23
Mean atomic weight: 50.9415
Isotopes: 47, 48, 49, 50*, 51*, 52. *Stable
Stable Electron shell configuration: 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d3
Physical Properties
Melting point: 1887ºC
Boiling point: 3377ºC
ΔH (fusion): 17.6 kJ mol-1
ΔH (vap): 458.6 kJ mol-1
Density: 6110 kg m-3 (19ºC)
5550 kg m-3 (liquid @ m.p.)
Thermal Conductivity: 30.7 W m-1K-1 (27ºC)
Coefficients of linear thermal expansion:
8.3 x 10-6 K-1 (23-100ºC)
9.6 x 10-6 K-1 (23-500ºC)
10.4 x 10-6 K-1 (23-900ºC)
10.9 x 10-6 K-1 (23-1100ºC)
Electrical resistivity: 19.1 M µΩ cm (20ºC)
Mass magnetic Susceptibility: 6.28 x 10-8m3kg-1
Molar volume: 8.34 cm-3
Modulus of elasticity: 12.4 x 104 N/mm2