对-苯二胺对亚硫酸钠溶液的稳定作用

THE STABILIZATION OF Na2SO3 SOLDTION BY P-PHENYLENEDIAMINE

在亚硫酸钠溶液中加入微量的对-苯二胺,可以改善它的稳定性。考察了不同用量的对-苯二胺在不同温度下对溶液稳定性的影响。实验证明,加入微量对-苯二胺对定性和定量实验没有不良影响,而且还能降低实验误差。在亚硫酸钠溶液和亚硫酸氢钠溶液中加入微量对-苯二胺均能增加抗氧化作用。

This paper introduces the improvement of the stability ofNa2SO3 solution by adding a very small amount of p-phenylenediamine,and studies the influence of different amount of P-Phenylenediamine at different temperatures on the stability of Na2SO3 solution.The experiments show that adding a very small amount of p-pheny-lenediamine not only has no bad influence on the related quantitative and qualititativeexperiments,but also can reduce their errors and increase the oxidation resistance of Na3SO3 solution or NaHSO3 solution.