Solubilization of Water-Insoluble Dye in Aqueous Solutions of Commercial Detergents

Solubilization. of Dimethylaminoazobenzene in Solutions of Detergents. II. Effect of Electrolytes on the Critical Concentration and the Solubilization. of Dimethyl-aminoazobenzene, Orange OT, and trans-Azobenzene in Detergent Solutions.

“…In all other cases so far investigated we found an increase of the solubilizing power of pure detergents with temperature. This agrees with McBain's (13) findings.…”

Vapor pressure data and phase diagrams for some concentrated soap-water systems above room temperatures

“…In the left hand lower triangle for sodium stearate, Fig 9, at 91 ° there is a vertical line at 93% soap representing the hemi-hydrate, NaStr.~H:O, discussed in another communication (7) ; but the dashed line to its right includes the bound, sorbed and capil-la~7 water at which the tie lines end. Other measurements at lower temperatures in presence of middle soap and isotropie solutions will be required to complete this picture by including any hydrates which lie to the right of the dashed gross curd field.…”

“…The slope of the eurve in the neat soap region is approximately that calculable from Raoult's law. The hysteresis effects in connection with the hydration of curd are discussed in a separate communication (7).…”

Lamellar and Other Micelles, and Solubilzation by Soaps and Detergents.

“…For many years McBain and collaborators have defined the term "solubilization" to include all cases in which otherwise insoluble material is brought into solution by incorporation within or upon stable colloidal micelles (16,19,20). For this there are three possibilities, all of which occur.…”