Quince - 1-6-2006 at 19:29
After doing solvent extraction of HNO3 by methylene chloride, I've read the easiest way to separate is to freeze out the HNO3. Since I've no access
to dry ice, I'm wondering if when distilling off the methylene chloride, reducing pressure will improve separation.
neutrino - 2-6-2006 at 02:24
There was a HUGE amount of discussion over at RS about this method. As I remember, the DCM simply be distilled off.
Quince - 10-8-2006 at 00:14
Well, that still doesn't answer my question. Will reducing pressure improve separation?
not_important - 10-8-2006 at 01:04
Look up the boiling points of HNO3 and DMC at 1 bar and some reduced pressure. If the low pressure boiling points are further apart that at standard
pressure, then it will probably help. If the boiling points are closer together, then I'd guess that it will hurt the separation. (or vapour
pressures at two different temperatures)