File:Toluene with sodium-benzophenone - intense blue.jpg

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Description
English: Reaction complete! Air free and moisture free toluene, with sodium-benzophenone indicator. Taken on 4 Sep 2006. Keywords: reflux, toluene, sodium, benzophenone, distillation, desiccation

Gallery

  • A bottle of benzophenone by Lancaster.
    A bottle of benzophenone by Lancaster.
  • ]] and benzophenone to produce dry, oxygen-free toluene.
    ]] and benzophenone to produce dry, oxygen-free toluene.
  • The mixture is still not blue yet indicating that the reaction is not complete.
    The mixture is still not blue yet indicating that the reaction is not complete.
  • The intense blue coloration due to the benzophenone ketyl radical shows that the toluene is considered free of air and moisture.
    The intense blue coloration due to the benzophenone ketyl radical shows that the toluene is considered free of air and moisture.
  • After the toluene has been thoroughly dried by the sodium and benzophenone, it is distilled at atmospheric pressure under a slight positive pressure of nitrogen to prevent contamination by air into the receiving Schlenk flask.
    After the toluene has been thoroughly dried by the sodium and benzophenone, it is distilled at atmospheric pressure under a slight positive pressure of nitrogen to prevent contamination by air into the receiving Schlenk flask.

Category:desiccants

Category:distillation
Date 4 September 2006 (original upload date)
Source Transferred from en.wikipedia to Commons by omegakent.
Author Rifleman 82 at English Wikipedia

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Transferred from en.wikipedia to Commons by omegakent.

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  • 2006-09-04 18:03 Rifleman 82 1600×1200× (333246 bytes) Reaction complete! Air free and moisture free toluene, with [[sodium]]-[[benzophenone indicator.]] Taken on 4 Sep 2006.

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Date/TimeThumbnailDimensionsUserComment
current01:30, 11 August 2009Thumbnail for version as of 01:30, 11 August 20091,600 × 1,200 (325 KB)Omegakent{{Information |Description={{en|Reaction complete! Air free and moisture free toluene, with en:sodium-en:benzophenone indicator. Taken on 4 Sep 2006. Keywords: en:reflux, en:toluene, en:sodium, en:benzophenone, [[:en:d
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