Solute transfer to and from liquid drops

Mass‐transfer data are presented for the four systems with water and toluene as solvents and diethylamine as the solute, including transfer of diethylamine to and from toluene drops rising through water and to and from water drops falling through toluene. The rate of transfer is dependent upon the direction of diffusion and upon which phase is dispersed. The transfer of diethylamine from a continuous water phase to toluene drops was found to be extremely susceptible to contamination.