Isobaric vapor–liquid equilibria for binary systems of butyl chlorides with heptane, toluene and cyclohexane at 101.3, 80.0 and 53.3 kPa

Isobaric vapor–liquid equilibrium (VLE) data are reported at 101.3, 80.0 and 53.3 kPa for six binary systems of 1-chlorobutane with heptane, cyclohexane and toluene, and 2-chlorobutane with the same hydrocarbons. The experimental isobaric T, x and y data were fitted to four two-parameter models namely Redlich–Kister, NRTL (α12 = 1), Wilson and UNIQUAC. The maximum likelihood principle was applied to adjust the model parameters.