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Author: Subject: smallest recommended amount to distill in a 24/40?
EmmisonJ
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[*] posted on 16-3-2009 at 04:32
smallest recommended amount to distill in a 24/40?


i was wondering what an approximate may be for the smallest amount of liquid to make it worthwhile to distill in a 24/40 distillation setup?

i would assume that a small amount of liquid, say 15ml of any liquid, would be a complete loss trying to distill in a 24/40 due to mechanical losses.
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bfesser
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[*] posted on 16-3-2009 at 07:46


Really, it's up to you. The lower you go, the lower the % recovery, to the point you've mentioned--when you'll get nothing but holdup.

Probably the minimum would be 25 mL or so (using a 50 mL round bottom), but you'll get low recovery. Below that, definitely go to either 19/22 or 14/20.
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not_important
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[*] posted on 16-3-2009 at 07:49


Yup, and holdup really depends on the type of fractionating column and head in use.

A distillation chaser can help to some degree.
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chemrox
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[*] posted on 16-3-2009 at 22:34


I use a short path still I had made in 24/40 and I do use a chaser sometimes.



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