Physical Properties Melting points: -More symmetrical than corresponding alkane,pack better into crystals,so higher MP. Boiling points: -Dependent on dipole moment,so ortho meta para,for disubstituted benzenes. Density: -More dense than nonaromatics,less dense than water. Solubility: -Generally insoluble in water Physical Properties Melting points: More symmetrical than corresponding alkane, pack better into crystals, so higher MP. Boiling points:  Dependent on dipole moment, so ortho > meta > para, for disubstituted benzenes. Density: More dense than nonaromatics, less dense than water. Solubility: Generally insoluble in water