enkephalin
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Registered: 22-12-2005
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Sublimation
I was wondering if anyone here had any experience with the vacuum sublimation purification of gram quantities of organic materials. More specifically
what kind of apparatus works well, other than a dedicated sublimator. I had wanted to use a coldfinger condenser inside a side-arm filter tube, but i
cant find one that has a socket connection. Any help would be very much appreciated.
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Magpie
lab constructor
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Location: USA
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Mood: Chemistry: the subtle science.
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I have used a 20mm test tube with side arm equipped with a 13mm test tube as cold finger. The smaller tube is sealed to the larger one with a rubber
adapter. I bought the adapter from a scientific supply house. But IIRC it was hard to find and a bit expensive.
The single most important condition for a successful synthesis is good mixing - Nicodem
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The_Davster
A pnictogen
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I sublimated napthalene or camphor, I forget which, in a uni organic lab. I believe I used a 100mL RBF with ice water suspended over a 250mL beaker
in which the compound was placed. Glass wool was stuffed inbetween the flask and beaker for a better seal.
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leu
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| Quote: | | I bought the adapter from a scientific supply house. But IIRC it was hard to find and a bit expensive. |
One can freeze a rubber stopper and then drill it out using conventional drills and a drill press instead of paying such prices 
Chemistry is our Covalent Bond
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