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Alkaline methylene blue method for determination of anionic surfactants and for amine oxides in detergents
Author(s) -
Turney M. E.,
Cannell D. W.
Publication year - 1965
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02540099
Subject(s) - methylene blue , chemistry , titration , chloroform , amine gas treating , sodium hydroxide , chloride , methylene , hydroxide , nuclear chemistry , inorganic chemistry , organic chemistry , catalysis , photocatalysis
Abstract The concn of anionic surfactants in alkaline media has been determined by modification of the methylene blue titration. The method is based on the oxidation of methylene blue chloride to dimethylthionoline, a red dye, in the presence of chloroform and sodium hydroxide. This method in conjunction with the acid methylene blue titration, also may be used to determine the amt of amine oxides in formulated products. For concns of less than 100 ppm a spectrophotometric method was used.