In this paper molecular interactions of L-glutamic acid (Glu) in aqueous D-sorbitol (D-SOR) are analyzed by measuring electrical conductivity in the broad temperature range of 293.15–313.15 K at ambient pressure. The density and viscosity data were also measured experimentally required to explore the derived conductometric properties. Meanwhile, the molar conductance ( \(\:{{\Lambda\:}}_{\text{m}})\) , limiting molar conductance \(\:{\:({\Lambda\:}}_{\text{m}}^{0})\) , Walden product ( \( \Lambda _{{\text{m}}}^{0} \eta _{0} \) ), ion association constants ( \(\:{\text{K}}_{\text{A}}\) ) and activation energy ( \(\:{\text{E}}_{\text{A}})\) of ion association are derived and discussed in the light of ion-ion and ion-solvent interactions. The Kraus–Bray model was used to analyze the limiting molar conductance ( \(\:{{\Lambda\:}}_{\text{m}}^{0}\) ) of the solutions. For the mixtures under study, the increased \(\:{{\Lambda\:}}_{\text{m}}\) values for Glu in aqueous D-SOR compared to pure water suggest a synergistic interaction. As D-SOR concentration increases, \(\:{{\Lambda\:}}_{\text{m}}\) of Glu decreases due to stronger solute–cosolute interactions and reduced ion dissociation. Glu functions as a structure creator in water, according to the \( \Lambda _{{\text{m}}}^{0} \eta _{0} \) finding. However, in aqueous D-SOR, increasing temperature and D-SOR concentration cause \( \Lambda _{{\text{m}}}^{0} \eta _{0} \) to drop, indicating structure-breaking behavior. Numerous energy and environmental applications may benefit from an investigation of the conductometric properties of Glu and D-SOR in aqueous solutions.
