File:Toluene with sodium-benzophenone - brown.jpg

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Summary

Description
English: Reaction not complete. Refluxing toluene with sodium desiccant and benzophenone indicator/oxygen scavenger. Taken 4 Sep 2006.

Keywords: reflux, toluene, sodium, benzophenone, distillation, desiccation

  • 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.
Date 4 September 2006 (original upload date)
Source Transferred from en.wikipedia to Commons by Liftarn using CommonsHelper.
Author Rifleman 82 at English Wikipedia

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  • 2006-09-04 18:05 Rifleman 82 1600×1200× (352717 bytes) Reaction not complete. Refluxing toluene with [[sodium]] desiccant and [[benzophenone]] indicator/oxygen scavenger. Taken 4 Sep 2006.

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current14:48, 29 October 2010Thumbnail for version as of 14:48, 29 October 20101,600 × 1,200 (344 KB)File Upload Bot (Magnus Manske) {{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|Reaction not complete. Refluxing toluene with en:sodium desiccant and en:benzophenone indic
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