The $P$–$V$–$T$–$x$ properties and liquid–liquid and liquid–vapor phase equilibria of $n$-hexane–water binary system

The $P$–$V$–$T$–$x$ properties of an $n$-hexane–water stratifying binary system are investigated in the ranges of temperatures from $372.75$ to $620.55$ K, densities from $66.87$ to $834.30$ kg/m$^3$, and pressures from $0.40$ to $65.34$ MPa for seven values of concentration of water (in molar fractions), namely, $0.166$, $0.257$, $0.347$, $0.615$, $0.827$, $0.935$, and $0.964$. The measurements cover a wide range of the parameters of state, including the regions of liquid–liquid and liquid–vapor phase equilibria. The Soave–Redlich–Quong and scaling equations are used to describe the properties of the $n$-hexane–water system.