Fail:Distillation of dry and oxygen-free toluene.jpg

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Keterangan
English: Distillation of dry and oxygen-free toluene from sodium-benzophenone desiccant. Glassware are under a slight positive nitrogen pressure from the side-arm of the receiving Schlenk flask to prevent oxygen contamination. Note that this is not a closed system - the nitrogen supply is connected to an oil bubbler (not in picture) to prevent overpressure.

Photo taken on 6 Sep 2006.

Keywords: distillation, toluene, sodium, benzophenone, desiccant

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.
Tarikh 5 September 2006 (original upload date)
Sumber Transferred from en.wikipedia to Commons by Liftarn using CommonsHelper.
Pengarang Rifleman 82 at Inggeris Wikipedia

Perlesenan

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Di sesetengah negara, undang-undangnya mungkin tidak mengizinkan; jika begitu:
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Log muat naik asal

The original description page was here. All following user names refer to en.wikipedia.
  • 2006-09-05 16:23 Rifleman 82 1600×1200× (391204 bytes) Distillation of dry and oxygen-free toluene from [[sodium]]-[[benzophenone]] [[desiccant]]. [[Laboratory glassware|Glassware]] are under a slight positive nitrogen pressure from the side-arm of the receiving Schlenk flask to prevent oxygen contamination.

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tarikh penubuhan

5 September 2006

tempoh dedahan

0.06666666666666666666 saat

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320

MIME type Inggeris

image/jpeg

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semasa14:48, 29 Oktober 2010Gambar kenit bagi versi pada 14:48, 29 Oktober 20101,600 × 1,200 (382 KB)File Upload Bot (Magnus Manske) {{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|Distillation of dry and oxygen-free en:toluene from en:sodium-en:benzophenone [[:en:d
14:48, 29 Oktober 2010Gambar kenit bagi versi pada 14:48, 29 Oktober 20101,600 × 1,200 (382 KB)File Upload Bot (Magnus Manske) {{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|Distillation of dry and oxygen-free en:toluene from en:sodium-en:benzophenone [[:en:d

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