Merck, 693017-5GMCN, Zwittergent® 3-14 Detergent

Synthetic zwitterionic detergent, which unlike other amphoteric surfactants, retains its zwitterionic character over a wide pH range. This property is attributed to the presence of both a strongly basic quaternary ammonium ion and an acidic sulfonate ion of equal strength. This ionic balance presumably prevents irreversible binding of the detergent to either anionic or cationic compounds.