Sciencemadness Discussion Board

Methanol drying error

Squibble - 4-10-2024 at 07:51

I just realized I made a mistake while trying to dry my methanol. I thought I'd seen it mentioned that KOH can be used. Of course I'm stupid enough that I didn't first check!

So I poured my methanol into a bottle with some KOH in it. This was exothermic and some of the hydroxide dissolved.
After looking this up, I see I might have made some potassium methoxide.

Anyone have an idea as to whether my methanol can be salvaged?

Unfortunately I don't have any molecular sieves. And MgSO4 or NaSO4 are not appropriate.

Sir_Gawain - 4-10-2024 at 08:16

You should be able to distill it. You might want to first add some magnesium sulfate to prevent glassware etching.

Squibble - 7-10-2024 at 12:00

Thanks for the tip!