Vapor-liquid equilibrium (VLE) measurements have been performed on several binary systems incorporating chemicals of interest to the biofuels industry. Systems were chosen based on two criteria: (1) similarity to measurement requests received by Wiltec and (2) suitability of using the Wilson Equation to model the activity coefficients for the VLE data. The Wilson Equation is a good choice for modeling fully miscible solutions of moderately polar compounds. With these two ideas in mind, systems were chosen incorporating the following compounds: 1-methoxy-2-propanol, 2-furaldehyde, allyl alcohol, butyl acetate, carbon dioxide, carbon disulfide, carbonyl sulfide, ethanolamine, ethyl acetate, n-butanol, pentane, and tert-butanol. Measurement temperatures ranged from -25 degrees C to +200 degrees C.