Sampling the gas phase over peanut oil provided the means to determine the oil phase-gas phase partition coefficients (K-oa) and the Henry's law constant (HLCO) at temperatures between 10 degrees C and 98.5 degrees C. For the 123 compounds in the study the linear range of natural logarithm of Henry's law constants by temperature was determined. The enthalpies of phase change of the compounds from the peanut oil were derived from the HLCO over the linear range. The experimental K-oa values of the compounds correlated well with those generated when I-octanol was the organic phase (r(2) = 0.97 with intercept at 0).