Dioctyldimethylammonium chloride

Dioctyldimethylammonium chloride (CAS 5538-94-3), also known as DODAC or Dioctyldimonium chloride, is a quaternary ammonium compound used as a cationic surfactant and biocide. Also marketed as Querton 28CL and Dodigen 2617.

Where is Dioctyldimethylammonium chloride used?

• Water treatment: biocidal agent controlling microbial growth in cooling towers, industrial process water and swimming pool systems
• Personal care: deposits on hair fiber to reduce static and improve combability in conditioners and rinse-off treatments
• Textile and leather finishing: softening and antistatic agent improving handle and reducing friction
• Industrial and institutional cleaning: surfactant and disinfectant activity in hard-surface sanitizers and specialized cleaning solutions
• Its cationic charge drives adsorption onto negatively charged surfaces, enabling antimicrobial action and surface conditioning.

Good to know: Technical and industrial grades are the standard commercial forms for most global buyers.

Commercial specifications

• Active concentrations typically 50% to 80%