Why would Methylene Chloride be a better solvent than Hexane? Both are immiscible with water, but hexane (dielectric constant= 1.9) is less polar than methylene chloride (dielectric constant 8.9). The compound is only slightly polar, so wouldn’t you want the slightly polar solvent (hexane) since “like dissolves like?” (A more polar solvent will be better to dissolve a slightly polar substance due to stronger dipole-dipole interaction. The rule “like dissolves like” is a good starting point for people who know nothing about chemistry. You do not belong to that group anymore. - GS).