Excess molar enthalpies for ternary mixtures of (methanol or ethanol plus water plus tributyl phosphate) at T=298.15 K

Excess molar enthalpies for two ternary mixtures of {x (1) tributylphosphate (TBP) + x (2) water + x (3) methanol/ethanol} were measured at T = 298.15 K and atmospheric pressure using a TAM Air isothermal calorimeter, by mixing methanol or ethanol with binary mixtures of (water + TBP). Excess enthalpies for initial binary mixtures of (water + TBP) were also measured under the same conditions, which showed phase separation at low molar fraction of TBP. Experimental results of the ternary mixtures were expressed with constant excess molar enthalpy contours on Roozeboon diagrams.