Author Topic: dcm, toulene, methanol  (Read 3483 times)

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racemic

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Re: dcm, toulene, methanol
« Reply #20 on: February 06, 2002, 10:33:00 AM »
oops chromic, my bad, there is something in the merck about boiling points of different methanol water soln's. Anyways you can't get dry methanol by distillation.

Chromic

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Re: dcm, toulene, methanol
« Reply #21 on: February 06, 2002, 11:45:00 AM »
You can get virtually dry MeOH by distillation. However, you require a very, very long column and a careful, slow distillation to properly separate it from water (400mm at the least)... and a very accurate thermometer.

Yeah, MeOH is miscible with DCM and with toluene and with DCM/toluene. And water is miscle with MeOH. But MeOH/DCM/Toluene/water will form two layers. One with mostly water, some DCM, some toluene.. the other with mostly DCM and toluene and some water.

Prdy2GO

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Re: dcm, toulene, methanol
« Reply #22 on: February 09, 2002, 06:21:00 PM »
Take some and add water and a drop of food coluring. Then add a fuck of a lot of salt (the plain kind) shake and let it settle you will ger 3 layers. You can figure it out from there...

Don't look at me I didn't do it!