Rajinder Singh Gujral
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General Chemistry
How to remove water from Isopropyl alcohol(IPA) WATER MIXTURE (10%MOISTURE AT START)
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Vitus_Verdegast
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add salt?
Why not add salt?
IPA is not miscible with conc aqueous NaCl solutions and will form a separate layer.
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chochu3
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Add sodium carbonate or magnesium sulfate with salt can do the trick.
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guaguanco
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I don't have my CRC handy, but I'm sure there's a handy azeotrope that would work. For example, adding benzene followed by distillation
of a isopropanol/water/benzene azeotrope leaves anhydrous isopropanol.
This is just an example; I don't know that benzene forms such an azeotrope.
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neutrino
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The azeotrope you speak of in known: bp 66.5*C, 7.5% water, 73.8% benzene, 18.7% isopropyl alcohol. This might be a problem, though, as benzene is
hard to get nowadays. There is a toluene azeotrope, though: bp 76.3*C, 13.1% water, 38.2% alcohol.
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