phunethicalaiming
Harmless
Posts: 2
Registered: 17-11-2011
Member Is Offline
Mood: No Mood
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Povidone-Iodine Extraction (sublimation sucks)
Hey guys, a while back I attempted a Povidone-Iodine extraction, and had "success".
However, I had a horrible time trying to scrape wet iodine off the coffee filters. I had plenty of Iodine crystals on the sides of my containers (I
don't yet have beakers), but it was not very productive to scrape and collect.
In the end, I threw a couple of the filters in zip-loc bags and closed them for later. I also used dH2O to rinse and collect any residue of iodine I
could find.
So I have these two capped bottles of Iodine/H2O solution just sitting for about 3 months. They are under a substantial amount of pressure. I'm
guessing it came to equilibrium, and stopped further sublimation?
I was positive they would burst, but have maintained the same high pressure for months. Crazy.
Any good way to salvage this?
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Sedit
International Hazard
Posts: 1939
Registered: 23-11-2008
Member Is Offline
Mood: Manic Expressive
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Sublimination....
That is by far your best way to salvage this.
I think the best thing to do with Povidone Iodine is to add NaOH and burn the shit out of it turning it to its salt and then work it up like it was
NaI. In the end its still only a 1% solution of Iodine.
Knowledge is useless to useless people...
"I see a lot of patterns in our behavior as a nation that parallel a lot of other historical processes. The fall of Rome, the fall of Germany — the
fall of the ruling country, the people who think they can do whatever they want without anybody else's consent. I've seen this story
before."~Maynard James Keenan
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neptunium
National Hazard
Posts: 990
Registered: 12-12-2011
Location: between Uranium and Plutonium
Member Is Offline
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if you need I2 that bad you can order the NaI or KI as long as its still legal...
also i had mine from old radiation detector crystals of pure NaI(Tl)
got over 450 g out of 2 detector (they were broken anyway)
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entropy51
Gone, but not forgotten
Posts: 1612
Registered: 30-5-2009
Member Is Offline
Mood: Fissile
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Add NaOH to the Povidone-Iodine until the color fades. FIlter and boil it down half way. Filter again while hot. Boil down again. Add HCl until it
turns red and pour into H2O2. Decant off the liquid and wash your iodine with water. Dry the crystals and sublime.
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