Quick question (that I didn't think was deserving of its own thread, since I found this).
I purchased some Pot Perm Plus some time ago as a technical grade potassium permanganate source, and for just playing around with basic
reactions/demonstrations, it's pure enough for that. The MSDS says its 60-100% KMnO4, but you can tell by the photos that there's clearly something else:
![](https://i.imgur.com/Q9EbizU.jpg) ![](https://i.imgur.com/TtG97r0.jpg) ![](https://i.imgur.com/V137lIY.jpg) ![](https://i.imgur.com/ScSZiBq.jpg)
I figured maybe I could dissolve the KMnO4 in a solvent, filter it to get any insoluble crap out, then crystalize it. But from what I've
gathered, KMnO4 isn't too soluble in acetone[src]. So perhaps just water? Though I know that heating it will cause it to decompose into MnO2.
So I suppose just distilled water and let it evaporate slowly at room temperature? Is that the best way?
P.S. I did look in the latest Purification of Laboratory Chemicals book for for potassium permanganate, but wasn't able to find anything on
it.
[Edited on 7-6-2021 by SuperOxide] |