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Author: Subject: Acid-Base Extraction - Non-polar solvent related question
MNK
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[*] posted on 19-3-2008 at 22:26
Acid-Base Extraction - Non-polar solvent related question


During the Non-Polar Solvent extraction phase towards the end of any acid-base extraction...

Id like to know how long one should allow the Non-Polar solvent (i use Dichloromethane) to extract from the Acidic Water/Alkaloid Solution

During the methanol phase at the beginning of the extraction i like to wait about a week

What would be the optimum waiting period with regard to the Non-Polar phase of the extraction be?

Thank u kindly
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not_important
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[*] posted on 19-3-2008 at 23:07


Really depends on what is being extracted and what the aqueous phase looks like. There are rule of thumb values, but those are just starting points for your particular application.
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Nicodem
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[*] posted on 20-3-2008 at 05:36


This question is too incomprehensible and unspecific for any worthwhile discussion. I'm moving this to Beginnings, just in case the original poster decides to explain the problem.
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chemrox
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[*] posted on 20-3-2008 at 18:42


It should be in Beginnings because he's asking if there's a general rule regarding extraction of veg materials (I assume) using non polar media. There isn't. There's also a thread somewhere with recent posts regarding efficacy of soxhlet extractors and critical fluid methods versus just having the stuff sit in solvent. Might read through that after a search for "extraction".



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