The most hated method of purification: column chromatography. It is really efficient, but it takes a lot time and a lot solvent.

The yellowish stuff is the not yet reacted benzoquinone, the red phase is what I need and the black at the top is the gunk. The column was pressurized with a few bar of nitrogen gas for a bit faster separation.

9:30 pm • 7 September 2013 • 71 notes • View comments