Measurements of Vapor–Liquid Equilibria in the Systems NH3–H2O–NaOH and NH3–H2O–KOH at Temperatures of 303 and 318 K and Pressures 0.1 MPa

A static method has been used to obtain vapor liquid equilibrium data for the systems ammonia (NH3) water (H2O) potassium hydroxide (KOH) and ammonia water sodium hydroxide (NaOH) at temperatures of 303 and 318 K and pressures from 0.1 to 1.3 MPa. The salt concentration in the liquid phase was chosen in the range from 2 to 60 mass0 salt in water. In both systems NH3 H2O NaOH and NH3 H2O KOH, solid liquid vapor equilibria were observed. In the NH3 H2O KOH system, liquid liquid vapor equilibrium was observed at 318 K and 1.1 MPa but at yet unknown concentrations of the liquid phases.