Densities rho, and viscosities eta, of aqueous solutions of L-ascorbic acid, nicotinic acid, thiamine hydrochloride and pyridoxine hydrochloride have been determined in different concentrations of sodium chloride at temperatures 288.15-318.15K. These data were used to calculate apparent molar volumes V-2,V-phi, partial molar volumes at infinite dilution V-2(o), and viscosity B-coefficient (B). The corresponding transfer parameters at infinite dilution (Delta V-tr(2)o and Delta B-tr) have been calculated using the data in water reported earlier on these vitamins. The dB/dT values have also been calculated. Results have been discussed in terms of solute-solute and solute-solvent interactions, which are found to be very complex in these systems. Activation free energy of viscous flow has also been calculated for these vitamins + sodium chloride + water systems. (C) 2013 Elsevier B.V. All rights reserved.