The corresponding results for the experimental Hildebrand solubility parameters from References 20,72 in combination with HOMO and LUMO energies, molecular volumes V m , computed dipole moments D as well as their hydrogen bonding properties for all considered solvents are shown in Table and Tab. II. Here we distinguish between solvents with a dipolar moment D < 5.0 Debye in combination with poor hydrogen bonding properties (aprotic solvents) in Table and solvents with moderate or strong hydrogen bonding behavior in combination with high dipole moments (D > 5.0 Debye) as shown in Table . As can be seen, the considered solvents span a relatively broad range of HSPs from 7 cal 1/2 /cm 3/2 for n-pentane to 16.30 cal 1/2 /cm 3/2 for ethylene glycol. The corresponding dipole moments of all solvents in combination with their ments as well as protic properties are needed where the HSP approach remains valid. Due to these reasons, we assume the validity of the HSP concepts for all solvents with D < 5 Debye in combination with poor protic properties. For solvents with moderate or strong hydrogen bond properties in combination with high dipole moments (D > 5 Debye), we expect certain deviations between our expression (Eqn. ( )) and the corresponding experimental values.