AFOAF wanted to test a EtOH solution which is known to contain piperazine and/or NaOH, ideally far more piperazine then NaOH, a titration will reveal the total concentration of base but will not distinguish which base is present.
so AFOAF was thinking for qualitative results to do a melting point test, but lets say the mix is (molar%) like 10%NaOH, 90%pip., will the NaOH crystallize out when the pip is melted?
i guess this result could be turned quantitative by "hot" filtering, for instance by suspending a fine mesh metal screen loaded with the solid above a beaker, placing in a oven to melt the pip through.
or is there some other easy way to get a qauntitative result?