Wan L S
J Pharm Sci. 1977 Dec;66(12):1779-80. doi: 10.1002/jps.2600661236.
The viscosity and surface tension of systems containing small amounts of salicylic acid in aqueous solutions of cetrimide were determined. An abrupt increase in viscosity was observed, and the molar ratio of salicylic acid to certrimide at which this viscosity increase occurred was 1:2. The surface tension of these systems also increased sharply after an initial lowering. The salicylic acid concentration at which this behavior was demonstrated was almost the same as that at maximum solubility in the surfactant solution.
测定了在西曲溴铵水溶液中含有少量水杨酸的体系的粘度和表面张力。观察到粘度突然增加，粘度增加时水杨酸与西曲溴铵的摩尔比为1:2。这些体系的表面张力在最初降低后也急剧增加。表现出这种行为的水杨酸浓度与在表面活性剂溶液中的最大溶解度时的浓度几乎相同。
