THE EFFECT OF PROPYL CELLOSOLVE ON WATER-STRUCTURE ESTIMATED FROM ULTRASONIC DATA

Ultrasonic absorption and velocity have been measured in aqueous solution of Propyl Cellosolve (ethylene glycol monopropyl ether) in the frequency range of 7. 5 to 220 MHz at 25 degree C. A single relaxational process has been found and the mechanism has been attributed to the solute-solvent interaction. The rate constants obtained are k//1//2 equals 9. 6 multiplied by 10**7 s** minus **1 for the forward and k//2//1 equals 1. 3 multiplied by 10**8 M** minus **1 s** minus **1 for the backward reaction. The effect of the solute on the water structure has been found to act slightly as the water structure promoter and the results have been discussed comparing with those of Butyl Cellosolve solution.