エチレングリコール中における塩析効果
1978 年 34 巻 2 号 p. T88-T92
詳細
1978 年 34 巻 2 号 p. T88-T92
The salting-out phenomenon in water has been investigated referring to the solubility of nonelectrolytes and the proton chemical shift of ethylene glycol in inorganic electrolytes-ethylene glycol solutions. The nonelectrolytes include biphenyl, azobenzen and p-aminoazobenzene; and LiCl, NaCl, NaNO3, NaSCN, NaClO4, KCl and CsCl are used as the inorganic solutes.
The solubility data have been interpreted in terms of the free energy change of transfer from pure to the salt solution (ΔFtrans.). It is found that ΔFtrans. in ethylene glycol is rather indifferent to inorganic electrolyte species as compared with that in water. On the other hand, the proton chemical shift showed that there is not any particular difference in the chemical shifts induced by the inorganic electrolytes between in ethylene glycol and in water.
These results were discussed from the viewpoint of the relationship between the salting-out and the structural regularity of the solvents, and the contribution of “the structural salting-out effect” in the salting-out phenomenon in water was evaluated qualitatively.
