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Abstract
Hydrotropes are regaining importance in the currently blossoming field of self-organizing molecular systems. Their hydrophile-lipophile balance being on the higher side, their water solubility is significantly more than that of traditional surfactants, and, yet, they provide a sequestered niche or microenvironment for the solubilizate. Hydrotropes start aggregating at a certain concentration known as minimum hydrotrope concentration (MHC). The MHC values fall in the molar range because of which hydrotropes applications are reducing. In this article, the effect of various additives such as alcohols, electrolytes, surfactants, amines, and organic compounds on the behavior of sodium salicylate (NaSal) was investigated using viscosity measurement.
Acknowledgments
Useful suggestions from D. Varade are gratefully acknowledged.