文献类型：期刊文献

英文题名：Synthesis and quantitative determination of alkanediyl-α, ω-bis (dimethyl alkylammonium bromide)

作者：Shi, YH; Chen, QB; Tong, S; Liu, HL; Hu, Y

机构：[1]E China Univ Sci & Technol, Res Ctr Chem Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China

年份：2003

卷号：31

期号：3

起止页码：322

外文期刊名：CHINESE JOURNAL OF ANALYTICAL CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000183030400016)】；

语种：英文

外文关键词：Gemini surfactant; nucleophilic addition-saltforming reaction; chemical titration analysis; N,N-dimethyl alkyl tertiary amine; dibromoalkane

摘要：Cationic Gemini surfactants, alkanediyl-alpha,omega-bis (dimethyl alkylammonium bromide) were synthesized from N,N-dimethyl alkyl tertiary amine and alpha, omega-alkyl dibromide by using ethanol as solvent. The reactants were recystallized in the ethyl acetate-ethanol solvent mixture and gave the purified products. The Gemini products were qualitatively detected and verified by infrared and H-1 nuclear magnetic resonance analysis, and were also quantitatively determined by the two-phase chemical titration by using bromophenol blue as the indicator and dichloroethane as phase spiltting agent. The results showed that the purity of the seven synthesized Geminis are greater than 97.5% in weight.