drying alcohol

I've never had much success drying alcohols (ethanol?) or other polar
solvents with salts, so I don't hold out much hope that you will be
able to do so using CuSO4.

Also, don't rely on a lack of color as an indicator that you have not
contaminated your alcohol with the salt. Remember, the color is due to
the water of hydration. If that water is removed, CuSO4 is colorless.
It is possible to have a minute amt of the salt in the solvent and,
because it is dehydrated, have no color from it.

Steve Chaffin



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