LAUSR

Apparent molar volumes, apparent molar adiabatic compressibilities and viscosity B-coefficients for metformin hydrochloride in aqueous d-glucose solutions were determined from solution densities, sound velocities and viscosities measured at T = (298.15–318.15) K and at pressure p = 101 kPa as a function of the metformin hydrochloride concentrations. The standard partial molar volumes ($$ \phi_{V}^{0} $$ϕV0) and slopes ($$ S_{V}^{*} $$SV∗) obtained from the Masson equation were interpreted in terms of solute–solvent and solute–solute interactions, respectively. Solution viscosities were analyzed using the Jones–Dole equation and the viscosity A and B coefficients discussed in terms of solute–solute and solute–solvent interactions, respectively. Adiabatic compressibility ($$ \beta_{s} $$βs) and apparent molar adiabatic compressibility ($$ \phi_{\kappa }^{{}} $$ϕκ), limiting apparent molar adiabatic compressibility ($$ \phi_{\kappa }^{0} $$ϕκ0) and experimental slopes ($$ S_{\kappa }^{*} $$Sκ∗) were determined from sound velocity data. The standard volume of transfer ($$ \Delta_{t} \phi_{V}^{0} $$ΔtϕV0), viscosity B-coefficients of transfer ($$ \Delta_{t} B $$ΔtB) and limiting apparent molar adiabatic compressibility of transfer ($$ \Delta_{t} \phi_{\kappa }^{0} $$Δtϕκ0) of metformin hydrochloride from water to aqueous glucose solutions were derived to understand various interactions in the ternary solutions. The activation parameters of viscous flow for the studied solutions were calculated using transition state theory. Hepler’s coefficient $$ (d\phi /dT)_{p} $$(dϕ/dT)p indicated the structure making ability of metformin hydrochloride in the ternary solutions.