tandpasta
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Registered: 13-10-2014
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(DIY) bushing/reducing adapter, 40/38 to 24/29
I bought a Soxhlet-extractor and overlooked that the top joint is way too large for my condenser. What a fool I am.
I tried using the Soxhlet-extractor with a flask filled with ice-water as a condenser, but that works poorly. The pressure builds up and solvent
vapors escape into my living room.
I ordered the only reducing adapter that I could find online, but it's going to take a while to arrive from China.
What could I use in the meantime? I've looked at rubber and cork stoppers, but it seems that their chemical resistance is lacking, considering the
solvents I use most often (hexane and dichloromethane).
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Steam
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Registered: 25-3-2014
Location: Minnesota
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couple options (it is very late where I am), I would recommend running it under gentle conditions so your makeshift condenser can keep up. It is all
about heat transfer with condensers- creating more surface area and having a greater temperature differential will aid in this.
You could do a flask with dry ice and everyone's favorite propyl ketone.
Also you could try to attach a small heat sink with some thermal paste below the flask (for more surface area).
As far as chemical resistance goes cork isn't a complete disaster... at least it wont melt with solvent vapors.
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PirateDocBrown
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Registered: 27-11-2016
Location: Minnesota
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Use a rubber stopper. Wrap it up completely with Teflon tape. Won't last forever, but should hold you till you get the right glass.
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