Didecyl dimethyl ammonium chloride

Didecyl dimethyl ammonium chloride (CAS 7173-51-5) is a quaternary ammonium compound supplied as a liquid gel, commonly referenced under trade names BTC 1010 and Bardac 22. It carries no assigned E-code and is classified under EC 230-525-2. It functions as a cationic surfactant with documented antimicrobial, emulsifying, and conditioning activity.

In water treatment, it disrupts microbial cell membranes at low concentrations, making it effective for algae and bacteria control in cooling towers and process water systems. In personal care formulations, it acts as both a conditioning agent and preservative booster, adsorbing onto hair and skin surfaces to deliver substantive antimicrobial and emollient effects.

This compound is available in standard industrial grades compliant with REACH registration requirements. It is supplied in liquid gel form in drum and IBC formats suited to industrial procurement volumes. Buyers should confirm grade specification against applicable biocidal product regulations under EU BPR before use.