NERV
Hazard to Others
Posts: 152
Registered: 22-9-2002
Location: USA
Member Is Offline
Mood: Fluorinated
|
|
Polysulfides
I know there was a topic on this awhile ago, but I figured I would start a new one since I couldn't find it. I recently did an experiment to
produce ammonium polysulfide. I held a mixture of household ammonium under reflux with about 10 grams of sulfur, I forgot to measure to amount of
ammonium used in the system. I used a vacuum adapter with a PE tube hooked to it to lead the exes ammonium, and H2S produced during the reaction
outside. Here is a photo of the apparatus:
http://www.angelfire.com/anime4/blackdragon/Reflux_setup.jpg
The mixture was held under reflux for about 2 hours. After which time most of the sulfur had dissolved. Here are some photos of the reactions
progression:
http://www.angelfire.com/anime4/blackdragon/solution_after_30min.jpg
http://www.angelfire.com/anime4/blackdragon/solution_after_1hour_30min.jpg
After this period of time I let the system cool for about an hour. I the used an air compressor to purge any execs gasses out of the system. Here is a
photo of the setup while being purged:
http://www.angelfire.com/anime4/blackdragon/exess_ammonium_purg.jpg
The finished solution was a dark purplish red color. Here is a photo of the finished product:
http://www.angelfire.com/anime4/blackdragon/finnished_product.jpg
I am now trying to find a way to stabiles the mix because overnight almost all the sulfur precipitated out of solution, and the color of the mix
turned from a lovely purple red to a bright piss yellow. I hope to experiment with Sodium polysulfide in my next experiment.
P.S. sorry about the crummy pictures, I geuss that’s what I get for buying a cheap digitale camera.
P.S.S You may have to copy and paste the photographs due to the fact that angelfire sucks.
P.S.S.S. for some reason haklf of the post is in bold and I dont know why.
[Edited on 22-9-2002 by NERV]
Vir sapit qui pauca loquitur.
|
|
|
madscientist
National Hazard
Posts: 962
Registered: 19-5-2002
Location: American Midwest
Member Is Offline
Mood: pyrophoric
|
|
The old thread was actually on sodium polysulfide: http://www.sciencemadness.org/talk/viewthread.php?tid=3
I weep at the sight of flaming acetic anhydride.
|
|
|
FrenchPyro
Harmless
Posts: 9
Registered: 9-5-2003
Member Is Offline
Mood: No Mood
|
|
Angelfire.com would set sometimes a illegal coockie to the browser.
You can clear the cache and then close the browser.
|
|
|
Iv4
Hazard to Others
Posts: 312
Registered: 28-5-2003
Member Is Offline
Mood: No Mood
|
|
I read through the old thread and it seems fairly easy as reactions come and go.Largest application of this seems to be in the realm of toxic
chemicals(think abotu ti sulfer based V agents are nastier han flourine based G agents-you get the picture).
Would using a nitride base create a pulysulfer nitride or would the nitriding have to be done later?If it can it would sure as hell open up some nice
magnets 
Edit:Turns out I was sadly mistaken as polysulfer nitride wont be superconductive without liquid helium(critical tempereture of .34K).Rather stick to
YBCO.
[Edited on 7-6-2003 by Iv4]
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
