Fig. 2.
a Organic solvents used for the preparation of mixed aqueous solutions. The properties of water activity a w and relative dielectric constant ε r of 20 wt% solutions are indicated. b Values of the water activity and the relative dielectric constant determined for the 20 wt% solutions of organic cosolvents containing 1 M NaCl (Nakano et al. 2004, 2012a)