[en] Peculiarities of e_s solvated electron optical absorption in liquid non-polar systems, produced in the course of ND₃ and N₂D₄-butanol mixture (1:2) dilution by alkanes, are studied by pulse radiolysis method. It is ascertained, that the medium conduction band bottom position practically does not effect the spectral characteristics of e_s, which appear to depend on solution concentration. The results are discussed on the basis of light absorption phenomenon semiquantitative analysis under the absence of polar continuum with the participation of representations on the band broadening heterogeneous mechanism and on the change of e_s photoexcited state nature at varying concentrations