Use
potassium monoxide: A grey crystallinesolid, K2O; cubic; r.d. 2.32; decompositionoccurs at 350°C. It maybe prepared by the oxidation ofpotassium metal with potassium nitrate.It reacts with ethanol to formpotassium ethoxide (KOC2H5), andwith liquid ammonia to form potassiumhydroxide and potassamide(KNH2).