EXCESS VOLUMES OF MIXTURES OF SOME ALKYL ESTERS AND KETONES WITH ALKANOLS

Excess volumes were calculated from measured densities of binary mixtu res of five linear alkanols (methanol, ethanol, 1-propanol, 1-butanol, and 1-pentanol) with five n-alkyl acetates (methyl, ethyl, propyl, bu tyl, and pentyl acetates) and with two ketones (acetone and 2-butanone ) at 20-degrees-C. The whole composition range was studied for all thi rty-five binary systems. For a given alcohol, the DELTAV/phi1 phi2 val ue decreases with increasing size of the carbonyl compound. For a give n carbonyl compound, it increases with the length of the alkanol. Syst ems with methyl acetate as one component have relatively large DELTAV/ phi1 phi2 values, while systems with methanol display different compos itional dependency in respect to systems with other alcohols.