ORGANIC CHEMISTRY Chapter 4 o Constitutional isomers are always found to have different physical properties(melting points boiling points, densities, indexes of refraction) compounds mp(℃C)bp(℃) 95 68.7 0.6594 153.760.3 0.6532 118 63.3 0.6643 128.858 0.6616 98 497064921.3688 Department of Chemistry, Xiamen UniversityORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 4 Constitutional isomers are always found to have different physical properties (melting points, boiling points, densities, indexes of refraction) -98 49.7 0.6492 1.3688 -128.8 58 0.6616 1.3750 -118 63.3 0.6643 1.3765 -153.7 60.3 0.6532 1.3714 -95 68.7 0.6594 1.3748 bp( d nD compounds mp( ) )