Potassium hydroxide rubidium alloys

Molten sodium and potassium hydroxides are completely miscible in all proportions, and the f.p. curve has a minimum at 187° with a mixture containing 38 7 atomic percent, of KOH, that is, 48 97 per cent, of KOH by weight. The transformation temp, of the cooling solid alloys furnish a curve similar in form to the f.p. curve, and the solid eutectic has a transformation point at 181°., Mixtures of potassium and rubidium hydroxides are completely miscible, and they give a curve with two maxima-, one rises from the m.p. of potassium hydroxide 360-4° up to 399° with 87 atomic per cent, of KOH, and the other from the m.p. of rubidium hydroxide... 

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