A survey of reported compositions along the saturation curve (sat), and compositions of coexisting phases in equilibrium (eq.) for the system 1-octanol-hexane-water is given in Table 84.

Saturation curve The system 1-octanol-hexane-water forms a large miscibility gap of type 2 covering the majority of the concentration triangle. Compositions along the saturation curves were not reported independently in the references; the saturation curves can be constructed on the basis of equilibrium compositions of phases. Two binary systems, hexane-water and 1-octanol-water, form miscibility gaps. The data for these systems were compiled and critically evaluated in previously published SDS volumes, Refs. 3 and 4, respectively. The recommended values of mutual solubility of the hexane-water system³ at 293 K are x'₂=0.99946 and x"₂=2.5·10^-6. The recommended values of mutual solubility of 1-octanol-water system⁴ at 298 K are: x'₁=0.742 and x"₁=7.5·10^-5. Experimental solubilities of binary systems presented in Ref. 1 at 293.2 K are x'₁=0.99970, x"₂=7.1·10^-6 and x'₁=0.742, x"₁=5.81·10^-5, respectively.

Phases in equilibrium Compositions of coexisting phases in equilibrium for the ternary system 1-octanol-hexane-water were reported in both references. The experimental procedure was reported very briefly in Ref. 1 and not at all in Ref. 2. All compositions of phases in equilibrium reported in Refs. 1 and 2 at various temperatures are consistent one with another. All presented data are treated as tentative. To present system behavior, experimental compositions of coexisting phases in equilibrium at 293.2 K¹ are presented in Fig. 46 .