Sulphur

Atomic number: 16

Symbol: S

Category: non-metal

Density at 25°C: solid, varies from 1.92 to 2.07

Also sulfur. Is one of the first naturally occurring elements that can and often exists in close to pure form. Even more so than carbon.  It is brightly coloured yellow substance. It is also essential to life and part of skin and nails as keratin. 

Sulphur pieces. image adapted from wikipedia


Use, natural applications or common combinations: 

  • in various proteins, life essential
  • sulphuric acid
  • fertiliser, matches, instecticides


Basic characteristics:

  • Standard atomic weight: [32.059; 32.076]
  • Melting point: 115.21 °C
  • Boiling point: 444.6 °C
  • Radioactivity: most are stable
    • 35S is short with a half life of 87 days but only trace amounts.