Solubilities of n-octadecane, n-nonadecane, n-eicosane, and n-tetracosane in dipropyl ether, dibutyl ether, 1-chlorobutane, and 1-chlorooctane have been measured by the synthetic method as functions of temperature from near 0degreesC to the melting point of the alkane. All systems exhibit small deviations from ideal solubility, positive at lower solute compositions and, for some systems, slightly negative at higher solute compositions.