Sciencemadness Discussion Board

Purity of Pentaerythritol

erik89 - 3-1-2009 at 23:31

Hi!

I had a rather perculiar dream, the other day.
Two days ago, I had a dream on how I got hold of some pentaerythritol.

Yesterday, I had a similar dream.
First, I meassured up X mL of H2SO4 and Y mL of HNO3.
These were pre-chilled and later mixed, and once again chilled to a temperature
of about -10 C.

Then, I meassured up Z grams of Pentaerythritol.
I started the addition of PE to the nitrating-mix.
This is were my dream got fuzzy.

I added one grams at a time.
The PE just simply DISSOLVED in the nitrating-mix.
I added another gram. I still just dissolved.

After a while, all of the pentaerythritol were in the mix and "dissolved"
The mixture whas 100% CLEAR, which is shouldn´t bee.
There should have been a white slurry, with some crystalls in it.

The "liquid" was added to water, to precipitate the "PETN".
Nothing precipitated.

There is nothing wrong with the acids, since I had an similar dream, based on these acids.
So, I think there is something wrong with my pentaerythritol.

Is there anyway to test it´s purity?

Have anyone of you guys had a similar problem?
If so, how did you solve it?

COuld it have been any water in the PE, since it is hygroscopic?

Thanks in advance!

chemoleo - 4-1-2009 at 05:29

Either your acids were hugely dilute or it wasn't PE.

Nonetheless we don't do dreams here!!!

More importantly, there are already threads on PETN synthesis, you should continue and post in there...

Please remove the dreamy bits, edit to first or third person, and I'll merge your post with the existing thread- just this once!