Journal of Chemical and Engineering Data, Vol.41, No.5, 1066-1070, 1996
Vapor-Liquid-Equilibria for Alcohol Plus Alcohol Plus Sodium-Iodide at 298.15 K
Vapor-liquid equilibria for methanol + propan-1-ol + NaI, methanol + propan-2-ol + NaI, ethanol + propan-1-ol + NaI, and ethanol + propan-2-ol + NaI systems were measured at 298.15 K using a static method. The apparatus was tested by comparing results for ethanol + water and ethanol + water + CaCl2 with literature results. Results were tested for thermodynamic consistency by Herinton’s area test and point test. NaI exerted a salting-in effect on all binary alcohol solutions and the order of the salt effect of NaI was methanol + ethanol < ethanol + propan-1-ol < ethanol + propan-2-ol < methanol + propan-1-ol < methanol + propan-2-ol. Hala’s model was applied for the correlation of four alcohol + alcohol + salt systems using observed data. Calculated beta values in Hala’s equation were between 2.8 and 3.9 for the four alcohol + alcohol + NaI systems.