in this work, we present our result on density and sound velocity measurment og 1-hexyl-3-methylimidazzolium chroide ([C6mim][Cl]) in water and aqueous solutions of poly(ethlyene glycol) 2000 and 6000 over a range on not been previously published. The effect od polymer and temperature on the apparent molar volume and isentropic compressiblility of [C6mim][Cl] are studied.
