Premium
The Determination of alkene sulfonates in olefin sulfonates by ozone titration
Author(s) -
Mcclure J. D.
Publication year - 1978
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/bf02671418
Subject(s) - sulfonate , alkene , chemistry , titration , olefin fiber , sodium , propene , organic chemistry , inorganic chemistry , catalysis
A simple and rapid method is described for the deter mination of alkene‐1‐sulfonates in α‐olefin sulfonates (AOS). AOS are primarily mixtures (detergent range) of sodium salts of alkene‐1‐sulfonates (mixture of double bond position isomers) and hydroxyalkane‐1‐sulfonates plus small amounts of disulfonates in a 30‐40% aqueous solution. The analysis consists of titrating the sample in 98% acetic acid‐2% water solution with a stream of ozone to an indicator endpoint (Rouge Organol B.S.) which is detected photometrically. In tests with model compounds, a long carbon chain alkene‐1‐sulfonate, sodium hexadecene‐1‐sulfonate, and a 1‐alkene‐1‐sulfonate, sodium 1‐propene‐l‐sulfonate, were quantitatively determined with no interference from a hydroxyalkane‐1‐sulfonate, sodium hydroxytetradecane‐1‐sulfonate. In contrast, an alternative method of determining unsaturation, Brown hydrogenation, does not quickly and quantitatively determine 1‐alkene‐1‐sulfonates.