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  • 7440-19-9
  • Sm
  • 99.9%
  • 12mm
  • Class 4.3
  • 231-128-7
  • UN3208
  • PG III

Description

Characteristic

Samarium is a chemical element with the symbol Sm and atomic number 62. It is a moderately hard silvery metal that slowly oxidizes in air.

Phase at STP: solid

Melting point: 1345 K (1072 °C, 1962 °F)

Boiling point: 2173 K (1900 °C, 3452 °F)

Density (near r.t.): 7.52 g/cm3

when liquid (at m.p.): 7.16 g/cm3

Heat of fusion: 8.62 kJ/mol

Heat of vaporization: 192 kJ/mol

Molar heat capacity: 29.54 J/(mol·K)

Application

The major commercial application of samarium is in samarium–cobalt magnets, which have permanent magnetization second only to neodymium magnets.Other applications of samarium include catalysis of chemical reactions, radioactive dating and X-ray lasers.