Periodic Table of Elements

Element Astatine - At

Comprehensive data on the chemical element Astatine is provided on this page; including scores of properties, element names in many languages, most known nuclides of Astatine. Common chemical compounds are also provided for many elements. In addition technical terms are linked to their definitions and the menu contains links to related articles that are a great aid in one's studies.

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Overview of Astatine

Astatine's Name in Other Languages

  • Latin: Astatium
  • Czech: Astat
  • Croatian: Astat
  • French: Astatine
  • German: Astatin - r
  • Italian: Astato
  • Norwegian: Astat
  • Portuguese: Astato
  • Russian: Астат
  • Spanish: Astato
  • Swedish: Astat

Atomic Structure of Astatine

Chemical Properties of Astatine

Physical Properties of Astatine

Regulatory / Health

  • CAS Number
    • 7440-68-8
  • NFPA 704
    • Health:
    • Fire:
    • Reactivity:
    • Special Hazard: Radioactive<
    • OSHA Permissible Exposure Limit (PEL)
      • No limits set by OSHA
    • OSHA PEL Vacated 1989
      • No limits set by OSHA
    • NIOSH Recommended Exposure Limit (REL)
      • No limits set by NIOSH
    • Levels In Humans:
      Note: this data represents naturally occuring levels of elements in the typical human, it DOES NOT represent recommended daily allowances.
      • Blood/mg dm-3: nil
      • Bone/p.p.m: nil
      • Liver/p.p.m: nil
      • Muscle/p.p.m: nil
      • Daily Dietary Intake: nil
      • Total Mass In Avg. 70kg human: nil

    Who / Where / When / How

    • Discoverer: D.R.Corson, K.R.MacKenzie, E.Segré
    • Discovery Location: Berkeley California United States
    • Discovery Year: 1940
    • Name Origin:
      Greek: astatos (unstable).
    • Abundance of Astatine:
      • Earth's Crust/p.p.m.: N/A
      • Seawater/p.p.m.: nil
      • Atmosphere/p.p.m.: N/A
      • Sun (Relative to H=1E12): N/A
    • Sources of Astatine:
      Does not occur in nature. Produced by bombarding bismuth with alpha particles. Total world production to date estimated to be around 50 nanograms (50E-9 g).
    • Uses of Astatine:
    • Additional Notes:
      Astatine can be found in uranium and thorium minerals as part of the natural decay series, however, the total amount present at any point in time in the entire earth's crust is estimated to be less than 30 grams.

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