Re: ORGLIST: Removal of TEACl by lyophilization

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From: Jacob Zabicky (zabicky$##$bgumail.bgu.ac.il)
Date: Sun Jan 21 2001 - 07:07:45 EST


Hello Luis Fernando,

My guess is that when you freeze the mixture the ammonium salt and water
crystallize separately. Therefore, if the ammonium salt has any significant
vapor pressure, both Et3N and HCl will sublime together, as there is no
phase where to dissolve one of them preferentially, were it to remain
behind.

All the best,

Jacob

At 13:13 20/1/1, Luis Fernando Garcia Alles wrote:
> Dear people,
> My question is simple: is it triethylammonium chloride easy to
>remove by
>lyophilization?. Will the original pH shift towards basic (because of
>highest volatility of HCl) or towards acidic??
> Thank you very much for any answer.
> I wish you all the best
> Ciao
>==========================
============
>Luis Fernando García Alles, Ph.D.
>Departement für Chemie und Biochemie
>Universität Bern
>Freiestrasse 3
>CH-3012 Bern, Schweiz
>Tel. ++41 (0)31/631 37 92
>Fax ++41 (0)31/631 33 83
>E-mail :garcia$##$ibc.unibe.ch
>==========================
============
>
>
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