Va. Mitropolskaya et al., LIQUID-VAPOR-EQUILIBRIUM IN THE WATER PIPERIDINE PYRIDINE SYSTEM, Russian journal of applied chemistry, 66(4), 1994, pp. 769-772
The liquid - vapor equilibrium in the piperidine-water, piperidine-pyr
idine, and water-piperidine-pyridine systems has been investigated by
ebulliometric titration. Binary and tertiary azeotropes were shown to
be missing in the two latter systems. A mathematical model of liquid -
vapor equilibrium, based on the Tsuboka-Katayama equation has been ob
tained. Investigation of the model has shown that within the pressure
range 0.066-5.0 atm only aqueous piperidine and the pyridine azeotrope
s exist in the ternary system.