Abstract
Cetyltrimethylammonium bromide has been evaluated for the potentiometric precipitation titration of some water-soluble organic anions. Emf's were monitored with a fluoroborate ion-selective electrode and a double-junction reference electrode. The perchlorate, nitrate, and calcium electrodes also respond to the various anions. Cetyltrimethylammonium chloride and cetylpyridinium chloride are also suitable as titrants for the various anions. They can be used also at higher titrant strength. The classes of compounds which can be determined are nitroform and nitroform-yielding compounds, phenylborates, 2,4,6-trinitro compounds, benzenesulfonates, and some sulfonephthaleins.
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