Bis(2-hydroxyethyl)methyldodecylammonium chloride

Bis(2-hydroxyethyl)methyldodecylammonium chloride (CAS 22340-01-8, EC 244-921-8) is a quaternary ammonium surfactant commercially available under trade names including ASA 156, 2HEAC-12, and Sorpol EX 37. It carries no assigned E-code. The compound combines a C12 alkyl chain with two hydroxyethyl groups, giving it both surface-active and antimicrobial character.

In water treatment and textile processing, it functions as a biocidal agent by disrupting microbial cell membranes at low concentrations, while its quaternary nitrogen head group anchors to negatively charged surfaces to deliver durable antimicrobial effect. In personal care and industrial cleaning formulations, it acts as an emulsifier and conditioning agent, stabilising oil-in-water systems and reducing interfacial tension.

This material is subject to REACH registration requirements within the EU. Procurement teams should confirm supplier compliance documentation, including Safety Data Sheets aligned with Regulation (EC) No 1907/2006. It is typically supplied as an aqueous solution, with packaging formats ranging from drums to IBC containers depending on order volume.