Die quantitative Bestimmung anionogenaktiver Kolloidelektrolyte mit p‐ Toluidin, 1. Teil

Analysis of Synthetic Anionic Detergent Compositions

“…on the observation that large cationic molecules react stoichiometrically with these anionic compounds to yield products soluble in chloroform or carbon tetrachloride but insoluble in water (6,12,20,23,28,30,38,42,45,47). Other methods which are described involve the following principles: change in color of dye with changing surfactant concentration (25,46)', turbidimetric measurements upon addition of a cationic surfactant (26); and iodometric titration of phenols produced by caustic fusion of alkyl aryl sulfonates (22).…”