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Topic: Impromptu condensor ideas....  (Read 5306 times)

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Offline limpet chicken

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Impromptu condensor ideas....
« on: July 20, 2005, 08:09:20 PM »
Last night, I was doing a reaction involving refluxing the reactants at about 120C, this was achieved by adding NaCl to a pan fun of water boiling on a gas stove, as it was the handyest thing around.

I was using a punchball balloon, as a condensor, and a 100ml kjeldahl flask, as the reaction generates quite a substantial amount of HI gas, and of course, rubber balloons don't particularly like either very hot acidic gas, concentrated HI being just such a gas, about  hours into the reflux (about 48 hours in total is needed), the balloon got a pinhole rupture in the side, and started spewing forth a gout of brownish yellow HI gas.

That unfortunately, was my only balloon, I am thinking of using a combination of clear plastic bag, and duct tape, as a condensor, as it only needs to hold a small amount of HI (generated with 1200mg of red P, and 3.4g of I2.

Anyone reckon a plastic bag like this is useful as an emergency condensor? I think it will survive, hopefully, anyone got any better suggestions though?

 
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Re:Impromptu condensor ideas....
« Reply #1 on: July 20, 2005, 08:30:55 PM »
Is there a reason you can't bubble the resultant gas through an aqueous KOH solution?  Then you'd at least neutralize the acid.

Offline limpet chicken

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Re:Impromptu condensor ideas....
« Reply #2 on: July 20, 2005, 08:50:21 PM »
Well I tried, and wasted some iodine in the process.

No sooner than the firt plumes of HI reached the condensor, then it promply disintegrated >:(

Yes, I cannot lead the gases through anything, as the condensor is there to reflux the HI in the flask, the HI is actually meant to be there as a reactant.



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Re:Impromptu condensor ideas....
« Reply #3 on: July 21, 2005, 01:28:10 AM »
You don't have a glass condenser or anything?

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