Abstract Palczewska-Tulińska, M., Choliński, J., Szafrański, A. and Wyrzykowska-Stankiewicz, D., 1983. Maximum-likelihood evaluation of Antoine equation constants for vapor pressures of morpholine, n-heptane, cyclohexane and methylcyclohexane. Fluid Phase Equilibria, 11: 233–243. The vapor pressures of the title compounds have been measured by comparative ebulliometry. The maximum-likelihood method has been used to obtain fits to the Antoine equation.