Buschmann, N. published the artcileDoes the two-phase titration of surfactants require a mutagenic indicator?, Recommanded Product: Dimidium bromide, the publication is Journal of the American Oil Chemists’ Society (1995), 72(10), 1243, database is CAplus.
Appropriate safety precautions are recommended when using the indicator mixture of dimidium bromide and disulphine blue, as dimidium bromide is chem. similar to ethidium bromide which is a known mutagen. When titrating anionic surfactants, dimidium bromide is found in the aqueous phase at the end of the titration; the dye should be removed by adsorption on activated charcoal which must be disposed of according to regulatory guidelines.
Journal of the American Oil Chemists’ Society 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, Recommanded Product: Dimidium bromide.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary