File:Toluene with sodium-benzophenone - brown.jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file ‎(1,600 × 1,200 pixels, file size: 344 KB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary[edit]

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

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

Licensing[edit]

Public domain This work has been released into the public domain by its author, Rifleman 82 at English Wikipedia. This applies worldwide.
In some countries this may not be legally possible; if so:
Rifleman 82 grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

Original upload log[edit]

The original description page was here. All following user names refer to en.wikipedia.
  • 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.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current14:48, 29 October 2010Thumbnail for version as of 14:48, 29 October 20101,600 × 1,200 (344 KB)File Upload Bot (Magnus Manske) (talk | contribs) {{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

You cannot overwrite this file.

File usage on other wikis

The following other wikis use this file:

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Toluene_with_sodium-benzophenone_-_brown.jpg&oldid=545371486"