Standard Article

Indium: Radionuclides

  1. Rudolf J. Wehmschulte

Published Online: 15 JUN 2010

DOI: 10.1002/0470862106.ia719

Encyclopedia of Inorganic Chemistry

Encyclopedia of Inorganic Chemistry

How to Cite

Wehmschulte, R. J. 2010. Indium: Radionuclides. Encyclopedia of Inorganic Chemistry. .

Author Information

  1. Florida Institute of Technology, Melbourne, FL, USA

Publication History

  1. Published Online: 15 JUN 2010


Although the major isotope 115indium (95.7% abundance) is a β-emitter, it has a very long half-life at 6 × 1014 (600 trillion) years and hence can be considered practically nonradioactive. Other radioactive indium isotopes are short-lived and are either part of the decay processes of other radioactive nuclei or are prepared artificially for medicinal and analytical purposes in very small amounts. The environmental impact of radioactive indium isotopes is very minor and standard safety procedures for low-level wastes are sufficient.


  • radiopharmaceutical;
  • radiotherapy;
  • positron emission tomography (PET);
  • neutron activation analysis;
  • radiotracer