中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
三乙烯乙二醇辛酯 | triethylene glycol monooctyl ether | 19327-38-9 | C14H30O4 | 262.39 |
四聚乙二醇单辛醚 | 2-{2-[2-(2-Octyloxy-ethoxy)-ethoxy]-ethoxy}-ethanol | 19327-39-0 | C16H34O5 | 306.443 |
2-[2-(2-乙基己氧基)乙氧基]乙醇 | diethylene glycol octyl ether | 19327-37-8 | C12H26O3 | 218.337 |
not available
The mono-octyl ether of hexaoxyethylene glycol has been synthesized and carefully purified using foam fractionation in the ultimate stages of the purification. Surface tension measurements of solutions of the detergent in water using a Wilhelmy plate indicate a continuing decrease in surface tension with increasing detergent concentration above the critical micellar concentration. Vapour pressure osmometry using the Mechrolab 302 substantiated the interpretation of the results in terms of the law of mass action.
A four-component emulsion system containing the non-ionic surfactant C8H17 (O·CH2·CH2)6OH has been investigated, particularly in regions in which liquid crystal or more than two condensed phases are formed. Liquid crystal does not exist in the binary surfactant-water system at 25° but extensive regions form when the organic liquids octanol and dodecane are present, although these are not joined to the main two-liquid regions of the emulsion system. The surfactant is almost completely dissolved in the aqueous phase in water-dodecane mixtures but when substantial amounts of octanol are also present the partition coefficient is reversed in favour of the organic phase. At certain intermediate compositions three liquid phases are present. The significance of these results to the system as an emulsion are briefly discussed.