zombie616
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distilling with a hot plate
I am trying to get a glass distilling setup and I was wondering if I really have to use a sand bath or or oil while distilling with a hot plate. I was
also wondering exactly how I have to set up the oil or sand bath to eliminate hot spots.
Thank you in advance for your time.
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chemkid
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Well, if you are using expensive glassware it is totally worth it to protect your glassware. I have only performed distillations of solid dissolved in
liquid to obtain the solid and never used an sand or oil bath, though it might make things go a bit smoother, i don't find it worth the effort (i have
very little time to experiment usually  ).
The concept is that the oil or sand is more thermally conductive than having air around the flask (or vessel). Therefore the heat is distributed
through the sand/oil and also around your flask. In addition sand and oil won't carry the heat away from your vessel.
Chemkid
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Klute
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Using directly the hotplate as is will be very unpractical, and very wastefull heat-wise. Even a so-called air bath is crap IMHO, too much
fluctuantion, heat dissipation, etc. The bets option is a water bath when the bp's are no higher than 80°C. Otherwise just use a pan with some oil
adequatly chosen according to the desired pot temperature, and if you are using a stirrer hotplate, throw in a piece of steel wire to provide some
stirring of the oil (like one of those things you use to hold several pieces of paper together).
\"You can battle with a demon, you can embrace a demon; what the hell can you do with a fucking spiritual computer?\"
-Alice Parr
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Phosphor-ing
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Paper clip in the oil bath. Genius
"The nine most terrifying words in the English language are: 'I'm from the government and I'm here to help.'" -Ronald Reagan
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Klute
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That's the word I wa looking for, thank you 
\"You can battle with a demon, you can embrace a demon; what the hell can you do with a fucking spiritual computer?\"
-Alice Parr
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vulture
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Be wary that most oils are flammable, this a serious hazard when distilling high boiling or oxidizing compounds.
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