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I have not tested the use of KOH for extractions, but I do know that NaOH and KOH are very similar chemically.  If I was in need of NaOH for an extraction but only had KOH I would not hesitate to use it.


The reason NaOH might be said to pack "more punch" is that sodium has a lower molecular weight than potatium.  The molecular weight of NaOH is 23 + 16 + 1 = 40.  The molecular weight of KOH is 39 + 16 + 1 = 56.  Thus you are going to need 56 grams of KOH to equal the amount chemically of 40 grams of NaOH.  Other than that, I don't suspect there are any issues.


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