Analysis of Alkyl Ketene Dimer (AKD) by Potentiometric Titration, 1994 Papermakers Conference Proceedings

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A simple and precise potentiometric titration method has been developed for the determination of milligram quantities of AKD in non-aqueous solvents. It involves the addition of chloroform solutions of AKD to an excess of an organic base followed by titration of the excess base with perchloric acid in glacial acetic acid. The method was applied to the determination of non-reacted AKD extracted from handsheets, and the results agreed with those obtained by capillary gas chromatography. The method was also used to monitor stability of AKD formulations. Wood resin components and stearone, a hydrolysis product of AKD, do not interfere.