Skip to main content
Chemistry LibreTexts

Periodic Acid

[ "article:topic", "authorname:ggunawardena" ]
  • Page ID
    40535
  • There are two oxoacids referred to as periodic (pronounced per-iodic) or iodic (VII) acid:

    1.  Molecular formula:  HIO4
    Structural formula:

     

     

    2.  Molecular formula: H5IO6, also shown as HIO4 • 2 H2O
    Structural formula:

     

     

    Hydration of HIO4 gives H5IO6 and dehydration of H5IO6 gives HIO4.

     

     

    The commercially available periodic acid is usually H5IO6.

    Periodic acid is a strong oxidizing agent, commonly used to oxidize glycols.

    eg:

     

     

    see also periodate ester, hydroxylation