Periodic Table of Elements

Element Oxygen - O

Comprehensive data on the chemical element Oxygen is provided on this page; including scores of properties, element names in many languages, most known nuclides of Oxygen. 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 Oxygen

Oxygen's Name in Other Languages

  • Latin: Oxygenium
  • Czech: Kyslík
  • Croatian: Kisik
  • French: oxygène
  • German: Sauerstoff - r
  • Italian: Ossigeno
  • Norwegian: Oksygen
  • Portuguese: Oxigênio
  • Russian: Кислород
  • Spanish: Oxígeno
  • Swedish: Syre

Atomic Structure of Oxygen

Chemical Properties of Oxygen

Physical Properties of Oxygen

Regulatory / Health

  • CAS Number
    • 7782-44-7
  • NFPA 704
    • Health:
    • Fire:
    • Reactivity:
    • Special Hazard: OxidizerOSHA 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: constituent of water
      • Bone/p.p.m: 285000
      • Liver/p.p.m: 160000
      • Muscle/p.p.m: 160000
      • Daily Dietary Intake: mainly water
      • Total Mass In Avg. 70kg human: 43 kg (mainly water)

    Who / Where / When / How

    • Discoverer: Joseph Priestley, Carl Wilhelm Scheele
    • Discovery Location: Leeds England (Priestley)/Uppsala Sweden (Scheele)
    • Discovery Year: 1774
    • Name Origin:
      Greek: oxus (acid) and gennan (generate).
    • Abundance of Oxygen:
      • Earth's Crust/p.p.m.: 474000
      • Seawater/p.p.m.: N/A
      • Atmosphere/p.p.m.: 209500
      • Sun (Relative to H=1E12): N/A
    • Sources of Oxygen:
      Obtained primarily from by liquification and then fractional distillation of the air. Annual world wide production is around 100,000,000 tons.
    • Uses of Oxygen:
      Forms almost 21% of atmosphere. Used in steel making, welding, water purification, cement. It is also required for supporting life and combustion.
    • Additional Notes:
      Oxygen is the most abundant element on the surface of the earth.

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    A list of reference sources used to compile the data provided on our periodic table of elements can be found on the main periodic table page.

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