The amino-acid imidazoline amphoteric surfactant was prepared from dichloroethane and vegetable-oil fatty acid as raw materials by aminolysis, esterffication and hydroxymethylation.

以二氯乙烷与植物油脂肪酸等为,过氨解、酯化、羟甲基化缩合反应制得氨基酸类咪唑啉型两表面活剂。

Various substance has very small autoprotolysis constants which,however,has more large difference,so that the amphoteric solvents are found more wide application in titrimetric analysis.

不同物质具有非常小,然而又是差异较大常数。因此,这种两溶剂在滴定分析中找到了更为广阔应用领域。