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woelen
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Jylliana, you can make an ampoule of NO2 in that way. I made ampoules of NO2 and Cl2 that way. I had a gas generator, used a mix of P4O10 and CaCl2 to
dry the gas and flooded the ampoule with a lot of gas, while slowly retreating the PVC tube from which the gas was streaming. Then I quickly sealed
the ampoule.
The result is shown here (for the Cl2-ampoule, the NO2 ampoule is not on wikipedia):
http://en.wikipedia.org/wiki/Chlorine#mediaviewer/File:Chlor...
There is no need to fear explosions or other nasty things with NO2, when you lead some of it through a plastic tube. The issues, mentioned by
hissingnoise only become serious if there is prolonged contact with rubber, plastics and so on. E.g. if you perform a reaction with gaseous NO2 and
you lead the gas through plastic tubes for hours, then there may be a problem, but not if you make some gas, suck it in a 100 ml syringe, filled with
some P4O10/CaCl2 mix and then slowly blow it in a glass ampoule of 20 ml.
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Jylliana
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The method worked like a charm!
My setup:
My ampoule:
Thanks for your answers 
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Zyklon-A
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I've condensed some N2O4 using a GG distillation setup and dry ice acetone bath for a coolant.
Worked like a charm, but I unfortunately didn't have a working torch at the time (7-8 months ago) so I couldn't ampule any of it.
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neptunium
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NO2 condenses at arround 20 C with a vapor preassure of less than 1 atm..(approx)
its not supprising it can be contained in a weak regular ampoule...
unlike Chlorine or other gases requireing too much preassure, NO2 can be kept liquid sealled if it does nt get too hot ...
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hissingnoise
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| Quote: | | The issues, mentioned by hissingnoise only become serious if there is prolonged contact with rubber, plastics and so on. |
Indeed woelen, I'm guilty of what I accused Bert of doing . . .
And I fed NO2 through plastic tubing from a Jacob's Ladder years ago, without incident . . .
An amorphous, yellow powder which deflagrated weakly, was found within the tubing . . .
But you know how it is; you read enough about panclastites and next thing you know . . .
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Jylliana
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I appreciate your warnings and thoughts about it, hissingnoise.
I flushed the tubing with a bucketload(let my vacuümpump run for 20 minutes) of air and water directly after usage. That should prevent anything
dangerous from depositing on the insides of the tubes. Without knowing what could happen, I might have not done that.
[Edited on 17-12-2014 by Jylliana]
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