Lowy, Dan A. published the artcileA new high-efficiency reagent for the potentiometry of cationic surfactants, Related Products of bromides-buliding-blocks, the publication is Process Control and Quality (1993), 4(2), 125-37, database is CAplus.
A new heteropolyanionic reagent has been used for the accurate determination of quaternary ammonium salts (QAS) in various matrixes containing strongly interfering species. The octapotassium 1-cobalto(II)[1-aqua]-1-molybdo-16-tungsto-2-phosphate (HPA) is a successful titrant of several alkyltrimethylammonium salts (with an alkyl chain of C12-18), both in the potentiometric and the two-phase titration procedure. In order to prove the high efficiency of the proposed reagent, comparative titrations have been carried out for hexadecyltrimethylammonium bromide with HPA, sodium tetraphenylborate (TFB) and sodium dodecylsulfate (DDS). The dimidium bromide and disulfine VN 150 indicator mixture has been utilized in two-phase titrations, while the endpoint of the potentiometric titrations was detected by means of a QAS-selective liquid-membrane electrode. The relative error of the average of eight titrations by means of the three reagents decreased in the order TFB > DDS > HPA, corresponding to the increase of the association equilibrium constant: [(CH3)3RN]8HPA·19H2O > [(CH3)3RN]DDS > [(CH3)3RN]TFB.
Process Control and Quality published new progress about 518-67-2. 518-67-2 belongs to bromides-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Benzene, name is Dimidium bromide, and the molecular formula is C20H18BrN3, Related Products of bromides-buliding-blocks.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary