| Abstract: | An organic compound (5-propylthio)-lH-(benzimidazol)-2-yl-(carbamic acid-methyl ester)] was dissolved by conc. HCl in water-acetone mixtures. The solution was precipitated by NH3-solution which was diluted with pure water, acetone-water mixtures and pure acetone, respectively. Acetonewater ratio (weight-fraction) was the same in the solution-, and precipitating material when the diluting material was acetone-water mixture. The NIELSEN homogeneous nucleation theory was applied to determine the interfacial tension, σ, the value of which decreased with increasing the water content in the system. This result agrees well with literature data on the wetting behaviour of organic solid compounds in organic solvent-water systems. |
