气液色谱法测定非水溶液的盐析效应常数——卤代烃+NaI+环丁砜体系

The Determlnatin of Salting-Out Effect Coefficients in Nonaqueous Solution--For System of Alkyl Halide,Sodium Iodide and Sulfolane

环丁砜为一非质子极性溶剂。除脂肪烃外,它能溶解大多数有机化合物,还能溶解一些无机盐和高分子化合物。它有较高的热稳定性和化学稳定性。由于其介电常数(D_0=43.3,30℃)和偶极矩(μ=4.8Debye)较大,当作反应溶剂使用时,容易提高物质的反应能力。环丁砜的电解质溶液。

A gas-liquid chromatographic method was used to determine the salting-out effect coefficients (k2) of some alkyl halide solutes (n-propyl chloride,n-propyl bromide, n-propyl iodide, n-butyl chloride, iso-butyl chloride and iso-propyl bromide) in sodium iodide +sulfolane solution at 333. 15 K. The behavior of solute-solvent interaction has been discussed by Conway's electrostatic theory of salt effect.