Datoteka:Toluene with sodium-benzophenone.jpg

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Sažetak

Opis
English: Toluene is refluxed in sodium-benzophenone to remove oxygen and water, before being distilled. Photo taken 4 Sep 2006. Keywords: reflux, toluene, sodium, benzophenone, distillation, desiccation

Gallery

  • A bottle of benzophenone by Lancaster.
    A bottle of benzophenone by Lancaster.
  • Toluene is refluxed with sodium and benzophenone to produce dry, oxygen-free toluene.
    Toluene is refluxed with sodium 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
Datum 4 septembar 2006 (original upload date)
Izvor Transferred from en.wikipedia to Commons by omegakent.
Autor Rifleman 82 at engleski Wikipedia

Licenciranje

Public domain Ovaj rad je objavljen u javno vlasništvo od strane autora Rifleman 82 at engleski Wikipedia. Ovo se primjenjuje širom svijeta.
U nekim državama ovo zakonski nije moguće; u tom slučaju:
Rifleman 82 dopušta svima pravo korištenja ovog rada u bilo koju svrhu, bez ikakvih uslova, osim ako su takvi uslovi zakonski neophodni.

Originalni zapisnik postavljanja

Transferred from en.wikipedia to Commons by omegakent.

The original description page was here. All following user names refer to en.wikipedia.
  • 2006-09-04 17:00 Rifleman 82 1200×1600× (396460 bytes) Taken in my lab on 4 Sep 2006.

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Datum/vrijemeSmanjeni pregledDimenzijeKorisnikKomentar
trenutno03:23, 11 august 2009Smanjeni pregled verzije na dan 03:23, 11 august 20091.200 × 1.600 (387 KB)Omegakent{{Information |Description={{en|Toluene is refluxed in sodium-benzophenone to remove oxygen and water, before being distilled. Photo taken 4 Sep 2006. Keywords: en:reflux, en:toluene, en:sodium, en:benzophenone, [[:en:distillation

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