The solubility of water in octan-1-ol was measured from 275.15 K to 369.15 K by coulometric Karl Fischer titration. The mass fraction solubility, s(c), at 298.15 K was found to be (48.91 +/- 0.13) mg.g(-1). Experiments indicated the existence of a pseudoequilibrium state when there was a significant difference in the temperature of the liquid and the headspace gas. The density of water-saturated octanol (WSO) was measured from 288.15 K to 318.15 K. The density at 298.15 K was determined to be (831.7 +/- 1.7) kg.m(-3) with a change in density of 0.6 kg.m(-3).K-1.