一、引言尼龙66盐(以下简称66盐)是由己二胺和己二酸以等充分子所成的盐,其水溶液的pH值文献虽有记载,但年份较早,又缺少温度与浓度对pH值影响的定量数据。1972年H.F.Mark教授来沪进行学术交流时提及66 I. INTRODUCTION Nylon 66 salt (hereinafter referred to as 66 salt) is a salt of hexamethylene diamine and adipic acid with an equivalent molecule. Although the pH value of its aqueous solution is well documented, the earlier the year, the less the temperature and the concentration of the salt Quantitative data affecting the value. Reference was made to Professor H.F.Mark’s 1972 academic exchange in Shanghai