Partition Coefficient Kow of Benzene, Ethanol and Aniline in Benzene‐ethanol and Aniline‐benzene Mixtures and Coefficient of Distribution Kmix of these Mixtures

Abstract The study related to partition coefficients between n‐octanol and water Kow of compounds in binary mixtures benzene‐ethanol and benzene‐aniline was carried out. Partition coefficients of benzene, aniline and ethanol for different values of molar ratio of benzene and different total concentration of compounds in the mixtures benzene‐ethanol and benzene‐aniline were determined. Coefficient of distribution Kmix was determined for both mixtures. In benzene‐ethanol mixture collected results show statistically significant deviations the Kow of benzene from values for pure compound. For ethanol, there are no statistically significant deviations from values for pure compound. But also there are some trends of changes of Kow. In benzene‐aniline mixture collected results show statistically significant deviations of the Kow of benzene and aniline from values for pure compounds. Changes of Kow were used for explanation of acute toxicity of binary mixtures benzene‐ethanol and aniline‐benzene.