THE FORMATION OF SUPERCOOLED LIQUID SOLUTIONS IN SIMPLE-EUTECTIC TYPE ORGANIC SYSTEMS BY THE SUBLIMATION OF SOLID MIXTURES

A process is described for the formation of supercooled liquid solutions by the sublimation of solid mixtures—the liquids formed being supercooled in the sense that they can be condensed from the vapor phase above solid mixtures at temperatures below the eutectic values. The process can be thought of as proceeding, solids → mixed vapor → supercooled liquid solutions. The general nature of this phenomenon in organic systems of the simple-eutectic type is established as a result of the microscopic and macroscopic experiments performed in this investigation. A P/T/c space-model of a typical binary, eutectic-type, organic system, o-nitrophenol-naphthalene, is presented. A physical picture of the process under consideration is made possible on the basis of this model.