Abstract
For the analysis of total active materials (AM) and individual surfactants in the cationics-ampholytics-nonionics ternary mixtures, the determination of total AM in the mixtures by “n-Butanol Liq.-Liq. Extraction” method has been investigated and a new method determining the individual surfactants in the mixtures has been developed.
The method consists of four steps as follows :
(1) determination of total AM by n-butanol EKieselbach Eliq.-liq. extraction method,
(2) direct titration of cationics by “Semimicro BPB-DCE” method,
(3) determination of nonionics by “Semimicro Cation-exchange UV Absorption Spectrophotometry”, and
(4) ampholytics=total AM-(cationics+nonionics).
The results with various ternary mixtures showed that the total AM in the mixtures were extracted quantitatively by n-butanol Eliq.-liq. extraction method, and that the individual surfactants could be accurately determined by our method.
