Abstract
Liquid−liquid equilibrium data for the N2O5 + HNO3 + N2O4 system were measured by the cloud point method at 258.2 K, 265.2 K, 273.2 K, and 281.2 K. The solubility of dinitrogen pentoxide in dinitrogen tetroxide and nitric acid, dinitrogen tetroxide in nitric acid, and nitric acid in dinitrogen tetroxide and the tie lines were obtained separately. The single phase region, liquid−liquid equilibrium region, and liquid−solid equilibrium region were determined according to the equilibrium data. With the increase in temperature, the two-phase region reduces, and the solubilities of dinitrogen pentoxide in dinitrogen tetroxide and nitric acid, dinitrogen tetroxide in nitric acid, and nitric acid in dinitrogen tetroxide increase correspondingly.
Published Version
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