Quaternary ammonium salts

Definition

Quaternary ammonium salts are compounds where an ammonium ion (NH4+) has four organic groups attached to it, typically through a nitrogen atom, and is paired with a negatively charged ion (anion). These substances are known for their surfactant and antiseptic properties.

Related terms

Amines: Organic compounds derived from ammonia by replacement of one or more hydrogen atoms with organic groups.

Cationic Surfactants: Surfactants that have a positive charge on the head group, which includes quaternary ammonium salts among others.

Antiseptics: Substances that prevent the growth of disease-causing microorganisms, often including quaternary ammonium compounds due to their disinfectant properties