[Cz-chemistry] Need help in obtaining a suitable drawing for [[Vacuum Distillation]]

[mbeychok]

Richard:

Thanks for your response. I assume that where you said /"When we do our 
air sensitive distillations, we use a modified Vigreux column coupled to 
a standard jacketed condensation tube and have nitrogen purges on 
everything while we distill the solution into a Schlenk-type vessel with 
a stopcock", /that it is not a vacuum distillation which is the subject 
of my "Vacuum distillation" article in CZ. Is that correct?

However, I also assume that where you said "/Our other method, in the 
case of high boilers, is to use a short-path distillation head that we 
can hook up to a vacuum pump, similar to that found on the ChemGlass 
website (part # CG-1237).  The other distillation head on the ChemGlass 
website (CG-1233) will also assist in air sensitive distillations", 
/that it is definitely a vacuum distillation. In that case,  I would 
very much like to get a drawing of your setup/.

/If at all possible, the drawing should be in the .png format and about 
the same size as that PerkinsTriangle drawing in Wikipedia at 
http://en.wikipedia.org/wiki/Image:Perkin_triangle_distillation_apparatus.png 
. As you can see it is about 450 x 650 px and 30 KB. It could even be 
twice that large if need be ... but no more than that.  Just as in that 
Wikipedia drawing, the various parts should be numbered and  you should 
please name each part for me so that I could create a legend (naming 
each numbered part) to be included in the drawing caption (not in the 
drawing itself).

In my CZ article on "Vacuum distillation", I  will  revise the the 
"Perkin triangle apparatus*" *subsection  and re-title it as well. Would 
you please be so kind as to also:

(1) Suggest a new title for that section.
(2) Send me about a 2-4 paragraph writeup on your method of distilling 
air sensitive materials. I am a retired chemical engineer,  not a 
chemist. So your writeup will be better than anything I could come up with.

Thanks again,

Milton Beychok
1102 Colony Plaza
Newport Beach, CA 92660, USA

Phone: 949-718-1360
Web Site: http://www.air-dispersion.com
=============================================/

/Richard Mayes wrote:

> The pdf http://www.chem.queensu.ca/courses/06/chem397/ManipAirSens.pdf 
> shows a set-up that achieves the same result of the Perkin 
> Distillation Head.  I embarrassingly must admit that I had to look up 
> the drawing you cited even though we do air sensitive distillations 
> all the time in our lab (mainly metal chlorides and alkyltin 
> compounds).   When we do our air sensitive distillations, we use a 
> modified Vigreux column coupled to a standard jacketed condensation 
> tube and have nitrogen purges on everything while we distill the 
> solution into a Schlenk-type vessel with a stopcock.  Our other 
> method, in the case of high boilers, is to use a short-path 
> distillation head that we can hook up to a vacuum pump, similar to 
> that found on the ChemGlass website (part # CG-1237).  The other 
> distillation head on the ChemGlass website (CG-1233) will also assist 
> in air sensitive distillations. 
>
> If you are interested in what we use, I can get you a drawing of our 
> setup in a few days.
>
> Richard Mayes
>
> Graduate Research Assistant
> Inorganic Materials & Catalysis
> Barnes Group
> Dept. of Chemistry
> University of Tennessee
> Knoxville, TN 37996
>
> On Feb 12, 2008 2:05 AM, mbeychok <mbeychok at cox.net 
> <mailto:mbeychok at cox.net>> wrote:
>
>     Hello all:
>
>     Yesterday, I created a new CZ article [[Vacuum distillation]]. The
>     article has two main sections: "Vacuum distillation in petroleum
>     refining" and "Laboratory-scale vacuum distillation".
>
>     The laboratory section has a sub-section describing the use of the
>     "Perkin triangle apparatus" for vacuum distillation of
>     air-sensitive material. That section needs to be enhanced with a
>     drawing of the Perkin triangle apparatus that can be uploaded into
>     CZ. A drawing would be preferable rather than a photo.
>
>     An example of such a drawing exists in the Wikipedia
>     "Distillation" article but the author of that drawing has declined
>     giving us his real name, so we cannot obtain his drawing from
>     Wikimedia Commons and upload it into CZ.
>
>     Can any of you provide a similar drawing that we can upload into
>     CZ? Failing that, can any of you provide a good, clear photo of
>     the Perkin triangle apparatus?
>
>     I would be most appreciative of any help in this matter. Thanks in
>     advance,   
>
>     Milton Beychok
>     1102 Colony Plaza
>     Newport Beach, CA 92660, USA
>
>     Phone: 949-718-1360
>     Web Site: http://www.air-dispersion.com
>     =============================================
>
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