OSMOTIC AND ACTIVITY COEFFICIENTS OF SOME DIBOLAFORM ELECTROLYTES

Osmotic and activity coefficients are reported for five ethylenebis(trimethylammonium) salts. Solutions of these salts have properties similar to those expected of the dimer of the tetramethylammonium ion. Ion pairing is greatly reduced in the sulfate and in benzenedisulfonate salts over that found in simple 2:2 electrolytes such as cupric sulfate. The osmotic and activity coefficients of the 4,4′-bibenzyldisulfonate are found to be quite small.