A survey of reported compositions along the saturation curve (sat), and compositions of coexisting phases in equilibrium (eq.) for the system 2-methyl-1-propanol-benzene-water is given in Table 66.

Saturation curve The ternary system 2-methyl-1-propanol-benzene-water forms a miscibility gap of type 2. Two binary systems, benzene-water and 2-methyl-1-propanol-water, form miscibility gaps. These binary systems were compiled and critically evaluated in previously published SDS volumes, Refs. 3 and 4, respectively. These recommended values of mutual solubility at 298 K are x'₂=0.9970, x"₂=0.000 409 for benzene-water system, and x'₁=0.548, x=0.021 for 2-methyl-1-propanol-water system. The tie lines and experimental points along the saturation curve reported by Alberty and Washburn¹ are consistent with one another. The reported mutual solubility of the 2-methyl-1-propanol-water system x'₁=0.5425 and x"₁=0.0208 are in good agreement with the recommended values. Data of Letcher et al.² were reported in graphical form only and therefore are not compiled. The maximum alcohol concentration on the binodal curve at 298 K, x₁=0.55,¹ is consistent with the results of Alberty and Washburn,¹ x₁=0.558. The experimental tie lines at 298.2 K, Ref. 1, are presented in Fig. 34 together with the experimental points along the saturation curve.