Michael,
Back in the days when I was doing HF cleavages, I used N2 to remove the HF.
The N2/HF vapor was neutralized by bubbling it through a series of plastic
traps containing NaOH solution with phenolthalein as an indicator. Keep in
mind that HF cleavages were done in an enclosed gas train, and that you
would need a similar apparatus to use this technique.
Russ
--On Wed, Jan 5, 2000 5:13 PM -0500 "Breslav, Michael [PRI]"
<MBreslav@prius.jnj.com> wrote:
> Greetings,
> I need to evaporate a lot of TFA at a high rate and for safety reasons I
am
> looking for a chemical trap in addition to a cold trap. Peptides
> International sell trap and teflon that can be mixed with Ca(OH)2. This
is
> designed for trapping HF, but hopefully will work for TFA. Any other
advice
> based on your experience?
> Thanks,
> Michael Breslav
> R.W.Johnson PRI
> Spring House, PA
>
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