Vapour–liquid equilibrium for the 1-butene + methanol, + ethanol, + 2-propanol, + 2-butanol and + 2-methyl-2-propanol systems at 326 K

A total pressure measurement approach leading to pTz data, that is treated using the method of Barker (1953) to provide pTxy data, has been used to determine isothermal vapour–liquid equilibria for five binary systems 1-butene+methanol, + ethanol, + 2-propanol, + 2-butanol and + 2-methyl-2-propanol at 326 K. Error analysis of the measured results has been presented. All systems exhibited positive deviation from Raoult’s law and 1-butene+methanol showed azeotropic behaviour.