Ultrasonic velocity, denisty and viscosity of the quarternary systems consisting of water, glycerol and carbonato-bis-(ethylene diamine) cobalt (III) chloride are measured at 303.15 K for different proportions of the component to evaluate various acoustic parameters. Apparent molal volume studies have also been made for the solutions of the complex at the same temperature. The results are discussed here in terms of ion-solvent, ion-ion interaction and of structural effects on the solvent in solution.