Functions of hydrotropes (sodium salicylate, proline, pyrogallol, resorcinol and urea) in solution with special reference to amphiphile behaviors

The possibility of self-aggregation of the hydrotropes, sodium salicylate, proline, resorcinol, pyrogallol and urea has been tested by viscometric and calorimetric methods. The influence of hydrotropes on: (a) the phase forming behavior of water/Triton X-100+BuOH (1:1 w/w)/isooctane; (b) the percolation of conductance of w/o microemulsion system (water/AOT/isooctane); (c) the micellization of cetylpyridiniumchloride; and (d) the clouding behavior of TX-100 and methyl cellulose have been studied. An attempt has been made to rationalize the results.