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Antimony-Discovery, Properties, And Applications

October 16, 2023
written by Adeel abbas

Antimony is a chemical element with the symbol “Sb” and atomic number 51. It is a lustrous gray metalloid with a metallic appearance. Antimony is a relatively rare element, making up about 0.2 parts per million of the Earth’s crust.

image of Antimony element
Atomic number51
Relative atomic mass (Ar)Group in the periodic table
Standard stateSolid at 298 K
AppearanceSilvery lustrous grey
Period in the periodic table15
Group namePnictogen
Block in the periodic table5
Block in periodic tablep
Shell structure2.
CAS Registry7440-36-0


Antimony has been known since ancient times. The first recorded use of antimony was in ancient Egypt, where it was used in cosmetics. The element was first isolated in the 16th century by the German chemist Andreas Libavius.

Physical Properties

Antimony is a brittle, silvery-white metalloid that has a crystalline structure. It has a melting point of 630.63 Kelvin and a boiling point of 1587 Kelvin. Antimony is a poor conductor of heat and electricity.

Chemical Properties

Antimony is a chemical element in the nitrogen group. It has five valence electrons and is a metalloid. It is not very reactive, but it does react with acids to form antimony salts. Antimony is also known for forming alloys with other metals, such as lead.


  • Antimony has been used in the production of pottery and glassware for thousands of years.
  • Antimony is used as a flame retardant in plastics, textiles, and other materials.
  • Antimony is a toxic substance that can cause health problems if ingested or inhaled.


  • Antimony is used in the production of flame retardants, alloys, and batteries.
  • Antimony is also used as a semiconductor in electronic devices.
  • Antimony has medical applications, including the treatment of parasitic infections.