The Oleum reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Oleum

Oleum is also known as fuming sulphuric acid or Nordhausen acid. It has a chemical formula of H₂S₂O₇, and can be formed by dissolving excess sulphur trioxide into sulphuric acid. See sulphuric acid for more information.

This is the "Oleum" reference article from the English Wikipedia. All text is available under the terms of the GNU Free Documentation License. See also our Disclaimer.