Abstract
Solubilization studies in micellar systems have been carried out at 298.2 K in pure and commercial aqueous surfactant systems with and without inorganic salt added. The solubilizates were medium chain length alcohols, butanol to heptanol. For all studied systems the solubilization capacity decreased when salt was added. Sodium chloride was more efficient than lithium chloride in this respect. The effect of added salt was more pronounced for the longer alcohols. At 0.2 and 0.4 m NaCl the maximum amount of alcohol that could be solubilized was much less above the critical micelle concentration than the amount dissolved below. The results have been discussed in terms of changes in the solubilization mechanism and the precipitating phases upon addition of salt.
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