METALATION OF OLEFINS AND DiENES IN ALFIN POLYMERIZATION 3786potassium dodecanoate indicate that the transition occurs with the CS alcohol, but additional evidence, now being obtained, will be necessary before more definite ideas as to the extent of penetration of these long chain alcohols into the soap micelle can be advanced. SummaryAdditional evidence as to the presence of two loci of solubilization in soap micelles is obtained from solubilization data of hydrocarbon and polar compounds in soap solutions containing added electrolyte. The addition of potassium chloride to a 0.32 N potassium tetradecanoate (KCLO solution results in an enhancement of solubility of n-heptane and a decrease of n-octanol. With 0.05 N KC14-KC1 solutions, the solubilities of both polar and non-polar compounds increase. However, after the initial increase up to about 0.50 N potassium chloride, the solubility of the alcohol again decreases. Even though the critical micelle concentration of a soap depends only on the equivalent concentration of the ion opposite in charge to that of the colloidal electrolyte, the nature of both anion and cation affect solubilization. Thus in the solubilization of n-heptane for equivalent concentrations of additive, KC1 > K&OI > K4Fe(CN)6.3HpO whereas the reverse order holds when n-octanol is solubilized. However, these latter data present additional proof as to the two loci of solubilization, one in the bydrocarbon center of the micelle, the other in tbe palisade layer in the region occupied by the soap molecules. As the chain length of the solubilized alcohol is increased, there is a gradual transition from polar type to non-polar type solubilization most strikingly indicated when comparing Ca and CIO alcohols. Qualitative measurements of viscosity indicate that the addition of very small amounts of long chain alcohols to soap-salt systems result in the formation of very viscous, almost gel-like, systems. The maximum viscosities always QCCW a t concentrations of alcohol below the limit of solubilization (as indicated by turbidity).ST. PAUL, MINK.

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