Abstract
The effects on surface activities by mixing the sodium stearyl and oley' sulfates were studied.
(1) The solubility of stearyl sulfate in water increased by mixing of oleyl sulfate.
(2) The mixture showed double kraft points and their position shifted with the amounts of oleyl sulfates.
(3) There was not so much difference between the surface-tension of each solutions in relatively higher concentrations, but in dilute solutions (below 0.03 %) surface-tension became higher as oleyl sulfate content increased.
cmc-Values of both sulfates estimated from conductivity method and surface-tension method were not so differed.
(4) Carbon dispersing abilities of 0.05 % concentration were same, but in the case of 0.1 % solution the mixture showed higher abilities than solitary solutions.
