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Author Topic: Separation of Ethanol / Pyridine mix  (Read 2952 times)

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jmarjorie

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Separation of Ethanol / Pyridine mix
« on: March 09, 2006, 02:11:33 AM »

Dear All,

How can a mixture of Ethanol and Pyridine be efficiently and totally seperated from the same mix by fractional distillation, which practically yields a constant boiling point mixture of 75 deg Centigrade.
Can both chemical & physical methods be deployed simultaneously ? eg
Can the Pyridine be chemically reacted to form a compound having a much higher boiling point (say with dil HCL, to form Pyridine.HCL ?) or was the distillation temp too high, so that both compounds just distilled over ?
The fractionating column had steel helices and was long enough.
Any suggestions ? Thanks in advance.
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Re:Separation of Ethanol / Pyridine mix
« Reply #1 on: March 09, 2006, 06:22:53 AM »

Can you salt out the pyridine with HCl and then just filter out the solid to get the ethanol?
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jmarjorie

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Re:Separation of Ethanol / Pyridine mix
« Reply #2 on: March 10, 2006, 09:54:16 PM »

Thanks for your answer, which is EXACTLY what I thought, it confirms !
Employ a chemical reaction followed by a physical one... Thanks !!
Best regards,
jmarjorie
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Re:Separation of Ethanol / Pyridine mix
« Reply #3 on: March 11, 2006, 02:09:32 PM »

I'm not positive that it would work, but it's worth a shot, I suppose.
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