Stearalkonium chloride (inci)

Authors: Prof. Dr. med. Peter Altmeyer, Prof. Dr. med. Martina Bacharach-Buhles

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Last updated on: 29.10.2020

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Benzyldimethyloctadecylammonium chlorides; Benzyldimethylstearylammonium chloride; CAS number: 122-19-0, benzyldimethyl(octadecyl)ammonium chloride; Dimethylbenzyloctadecylammonium chlorides; Stearalkonium chloride

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Stearalkonium chloride is the benzyldimethylstearylammonium chloride, a benzalkonium derivative, a complex ammonium compound also known as a quaternary ammonium compound or quats. Quaternary ammonium compounds have a quaternary nitrogen atom, i.e. a nitrogen atom in which all four hydrogen atoms are replaced by organic radicals.

Stearalkonium chloride, a benzalkonium chloride derivative is a substance used in cosmetic formulations. It acts as an antistatic agent (reduces electrostatic charges on skin and hair), preservative (protects cosmetic products from microbial spoilage) and surfactant (washing-active substance/improves the even distribution of the products during application).

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