Excess molar volumes at 298.15 K of the ternary systems propyl propanoate + 1-chlorobutane + n-decane and propyl butanoate + 1-chlorobutane + n-decane, and of the binary systems propyl propanoate + 1-chlorobutane, propyl butanoate + 1-chlorobutane and 1-chlorobutane + n-decane, were determined using an Anton Paar DMA 60/602 densimeter. Different polynomial equations were fitted to experimental results of the ternary systems.