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Hydrofluorocarbons (HFCs) are known to have specific intermolecular interactions (hydrogen bonding) as well as large permanent electric dipole moments. The peculiar vapor-liquid equilibria (VLE) behavior (double azeotropes) observed in ammonia/R-125 mixtures led us further to study the phase behaviors of this binary system. The experimental VLE (PTx) data were measured from 205 to 248K for six concentrations...
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