Densities and viscosities of the binary systems of pentyl and hexyl acetates with n-alkanols (ethanol, 1-propanol, 1-butanol, 1-pentanol, 1-hexanol, 1-heptanol, and 1-octanol) have been measured at 298.15 K and atmospheric pressure, over the whole composition range. The excess volumes and change in viscosity have been obtained from the density and dynamic viscosity results. For all systems, the excess volumes are positive as the length of the hydrocarbon chain of the alkanol increases. The results of the viscosity-composition are discussed in the light of various viscosity equations suggested by Tamara and Kurata, Hind et al., McAllister, and Heric and Brewer.