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subsecret
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Liquid Nitrogen Dioxide
Have any of out members tried to condense NO2? It looks pretty awesome, just take care not to break the vial..
http://www.youtube.com/watch?v=ikNVn8P4h2E
Fear is what you get when caution wasn't enough.
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plante1999
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I case you wondered, a member have mad liquid NO2 and taken picture of it, there is picture of it somewhere on the forum.
I never asked for this.
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The_Davster
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Yup, it is not too difficult. I never tried to ampoule it though....
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plante1999
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I forgot to say the member was me, anyhow, it is very easy, and very fun to do so. Would do more ofttimes if rubber tubing was not destroyed in the
process.
I never asked for this.
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subsecret
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I wouldn't like to be around if a bottle of liquid NO2 broke... Do you still have the sample?
Fear is what you get when caution wasn't enough.
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plante1999
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Not about the bottle, but liquid NO2, never had a vial of it, I stirred it outside for the day I needed it, it was like -30 outside.
The picture is somewhere around...
[Edited on 18-8-2013 by plante1999]
I never asked for this.
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Pulverulescent
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| Quote: | | ]Have any of out members tried to condense NO2? It looks pretty awesome . . . |
It also looks very impure ─ the green colour suggests the sample consists of mixed NOx!
Possibly N2O3, . . . ?
"I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones"
A Einstein
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Mailinmypocket
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Check this out
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kristofvagyok
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In pure form it looks like this. If it's green or blue (as on that video) it contains a lot N2O3 instead of N2O4.
I have a blog where I post my pictures from my work: http://labphoto.tumblr.com/
-Pictures from chemistry, check it out(:
"You can’t become a chemist and expect to live forever." |
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Pyro
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Kristof, do you keep the sample cold? is the ampule special (thick walled)?
[Edited on 20-8-2013 by Pyro]
all above information is intellectual property of Pyro.  |
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Pulverulescent
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| Quote: | | is the ampule special (thick walled)[sic]? |
It should be obvious to all but the meanest of intellects and the dimmest of eyes that the pictured ampoule is of the regular variety . . .
"I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones"
A Einstein
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BromicAcid
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Made a nice mix of liquefied nitrogen oxides once upon a time. Before I knew better I tried to atmospherically distill a mix of
NaNO<sub>3</sub> with concentrated sulfuric acid. Nearly 50 mL of deeply colored distillate that refused to behave like nitric acid.
Took me sometime to realize the folly of my ways.
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I Like Dots
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ME TOO BromicAcid. It was before I had a proper hotplate. It was not hot enough to boil the acid, only produce lots of NOx! Iit was redish and im
thinking "hmm it must have a lot of nitrogen oxides dissolved."
But kristofvagyok You always post the best pictures and i envy whatever it is you do 
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Pyro
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oh fuck you pulverulescent!
his ampule just looks nothing like mine, thats why I ask
all above information is intellectual property of Pyro. |
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Pulverulescent
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So! Yours is one the that's thick?
"I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones"
A Einstein
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jock88
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Quote: Originally posted by Pulverulescent  | | Quote: | | is the ampule special (thick walled)[sic]? |
It should be obvious to all but the meanest of intellects and the dimmest of eyes that the pictured ampoule is of the regular variety . . .
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What exactly is a 'regular variety' of ampule?
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Pulverulescent
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Well, let's see ─ 'the type most commonly encountered' . . . ?
'Hope that helps?
"I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones"
A Einstein
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kristofvagyok
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Hi,
It is not a "sample", it is a commonly used reagent for nitration, so we have a bunch on these. The ampule is normal, not thick wall, no special
glass, nothing, it's a common glass ampule. The only thing to note that it should be chilled when sealed.
I have a blog where I post my pictures from my work: http://labphoto.tumblr.com/
-Pictures from chemistry, check it out(:
"You can’t become a chemist and expect to live forever." |
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Pyro
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How did you make it? did you distill,...?
all above information is intellectual property of Pyro. |
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kristofvagyok
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I have no idea where it came from, circa 30 year old ampules, so it could be from Russia, but there is also a chance that someone made it.
I have a blog where I post my pictures from my work: http://labphoto.tumblr.com/
-Pictures from chemistry, check it out(:
"You can’t become a chemist and expect to live forever." |
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Oscilllator
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I would like to point out that 5 seconds of internet searching reveals NO2 has a boiling point of 21 degrees, so there is no reason to use a
thick-walled ampule.
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Jylliana
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*UTFSE*
I have this idea of ampouling some gaseous nitrogen dioxide by leading it into the ampoule through a rubber tube, clamping the tube and then flame
sealing the ampoule right before the connection tube-ampoule.. I'll lose some of the gas, but in theory it should also trap some gas in the ampoule.
Does my idea sound reasonable or completely ridiculous? I don't want to do things that are very dangerous, so I ask first before doing anything
stupid...
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hissingnoise
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| Quote: | | I don't want to do things that are very dangerous, so I ask first before doing anything stupid. |
Nitrogen dioxide must not be allowed contact with organics, period!
Mixtures of NO2 and liquid hydrocarbons are sensitive, powerful explosives in their own right!
No contact with rubber/plastic ─ all glass apparatus must be used!
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Jylliana
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Okay. No-go, then. Good thing I asked before trying. I didn't know about the explosives-part. Thanks for your answer.
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diddi
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I would be condensing the NO2 gas from your reaction vessel in ice/water slush bath and sitting your ampoule in similar conditions. the liquid NO2
will just drip into the ampoule and when full enough, you can seal her up! don't go too cold (eg salt/ice) as NO2 freezes at around -10C
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