Rajinder Singh Gujral - 4-1-2005 at 02:42
How to remove water from Isopropyl alcohol(IPA) WATER MIXTURE (10%MOISTURE AT START)
add salt?
Vitus_Verdegast - 4-1-2005 at 02:55
Why not add salt?
IPA is not miscible with conc aqueous NaCl solutions and will form a separate layer.
chochu3 - 4-1-2005 at 04:04
Add sodium carbonate or magnesium sulfate with salt can do the trick.
guaguanco - 4-1-2005 at 09:43
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.
neutrino - 4-1-2005 at 14:11
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.