Glycine ionic properties

Amphitol 55AB [Kao Corp ] chem. Descrip. Cocoyl amide propyl dimethyl glycine Ionic Nature Amphoteric CAS 61789-40-0 EINECS/ELINCS 263-058-8 Uses Surfactant Properties Lt. yel. liq. 30% act. 

Considerable attention has been devoted to the nature of the solvent effects (as determined in water and in various mixed solvents) on the ionic dissociations (and related thermodynamic quantities) and other acid-base properties of aliphatic zwitterionic compounds. Such investigations include studies of tricine in 50 mass % methanol-water (1), Bes in pure water and in 50 mass % methanol-water 2,3), glycine in 50 mass % monoglyme-water (4), and glycine in pure water and in 50 mass % methanol-water (5,6, 7). The numerous factors (8,9,10) which... 

The data in Table 2 reveal another of the unique properties of the solvent water. The interaction of the water with the ions is not simply attributable to the high dielectric constant formamide has almost the same dielectric constant as water, yet it requires 1680 cal/mole of free energy to transfer glycine from water to formamide. This suggests that, as with the nonpolar solutes, ionic species induce significant changes in the local order of the water structure. 

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