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Topic: solvent for unknown residue  (Read 3303 times)

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Offline piggie1230

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solvent for unknown residue
« on: March 18, 2011, 05:26:12 PM »
If I'm wanting to extract an unknown residue, will chloroform and ethanol work as well as chloroform and methanol?
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Offline piggie1230

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Re: solvent for unknown residue
« Reply #1 on: March 18, 2011, 09:14:11 PM »
It has been implied to me that this will work, but it doesn't sound right.  I have been unable to find anything explaining the differences between methanol and ethanol in this context.
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Offline enahs

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Re: solvent for unknown residue
« Reply #2 on: March 18, 2011, 10:47:02 PM »
Well, if it is an unknown residue there is no way we can no if it is soluble in any of those, and are you trying to remove it from a compound that is not soluble in those...etc.
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Offline piggie1230

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Re: solvent for unknown residue
« Reply #3 on: March 18, 2011, 11:05:47 PM »
well, here is perhaps a better way to phrase the question:

Why is chloroform methanol used for lipid extraction instead of chloroform ethanol?  What are the potential differences between either alcohol?
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