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The determination of hydrotropes in detergent products by reverse‐phase and ion‐pair high performance liquid chromatography
Author(s) -
McPherson B. P.,
Omelczenko N.
Publication year - 1983
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/bf02666582
Subject(s) - chromatography , chemistry , high performance liquid chromatography , cumene , toluene , cartridge , elution , xylene , reversed phase chromatography , phase (matter) , sodium , sample preparation , materials science , organic chemistry , benzene , metallurgy
The three aromatic sulfonates most commonly used as hydrotropes in detergent products can be qualitatively and quantitatively determined by high performance liquid chromatography (HPLC). Reverse‐phase and paired‐ion methods are described for separating sodium toluene, xylene and cumene sulfonates using conventional C18, C8, hexyl, and cyano columns as well as radially compressed HPLC cartridges. Ultraviolet (UV) detection at 254 nm gives more than adequate sensitivity for hydrotropes formulated between 0.5 and 15%. Sample preparation is simple and all components can be eluted within 15 min. The quantitation has been proven precise and accurate during routine analyses of either powdered or liquid detergent products.