From: drhodes$##$globalnet.co.uk
Date: Thu Apr 24 2003 - 08:08:01 EDT
Do you have a list of suppliers, John? Darren.
----- Original Message -----
From: "John S. Roberts" <john.roberts$##$engineering-experts.com>
To: "Yuehui Zhou" <yuehuizhou$##$hotmail.com>; <mzmj$##$hiroshima-u.ac.jp>
Cc: <everybody$##$orglist.net>
Sent: Thursday, April 24, 2003 12:14 PM
Subject: Re: ORGLIST:distillation of Triethanolamine
> A wiped film evaporator works pretty well with these type of compounds.
> Obviously, a tight cut is going to be impossible with a wiped film
> evaporator, but a quick evaporation and removal of lights and color is
> feasible.
> John Roberts
> ----- Original Message -----
> From: "Yuehui Zhou" <yuehuizhou$##$hotmail.com>
> To: <mzmj$##$hiroshima-u.ac.jp>
> Cc: <everybody$##$orglist.net>
> Sent: Wednesday, April 23, 2003 8:33 PM
> Subject: Re: ORGLIST:distillation of Triethanolamine
>
>
> >
> > Such hydroxy compound may not be destillable at all (too strong hydrogen
> > bonds).
> > What is the impurity you want to remove? If the impurity is not an amine,
> > you can make your product a salt with HCl, then extract it with organic
> > solvents. Then release the amine with a base.
> >
> > Y. Zhou
> >
> >
> > >From: mohd zulkefeli <mzmj$##$hiroshima-u.ac.jp>
> > >To: <everybody$##$orglist.net>
> > >Subject: ORGLIST:distillation of Triethanolamine
> > >Date: Fri, 18 Apr 2003 17:25:54 +0900
> > >
> > >Hi everybody,
> > >
> > >I'm trying to distill a triethanolamine by reduce-pressure distillation,
> > >heating till about 200 degree celsius but it seems doesn't work. Does
> > >anybody knows the right method to distil this reagent?
> > >
> > >Thanks in advanced!
> > >
> > >zulkefeli
> > >
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