Diallyldimethylammonium chloride

Diallyldimethylammonium chloride (CAS 7398-69-8), commonly abbreviated as DADMAC, is a quaternary ammonium monomer used primarily as a building block for cationic polyelectrolytes.

Where is Diallyldimethylammonium chloride used?

• Water treatment: primary coagulant and flocculant that destabilizes suspended solids and colloidal particles in municipal and industrial effluent streams
• Paper and pulp: retention aids and drainage aids that improve fiber retention and sheet formation efficiency
• Personal care: conditioning agents that deposit on hair and skin, reducing static and improving combability
• Textile and leather: fixatives that improve dye uptake and reduce effluent color load
• Its polymers carry a permanent positive charge that enables charge-based interactions with negatively charged substrates.

Commercial specifications

• Aqueous solution, most commonly at 60–65% active content
• Specifications are typically defined by active monomer content, residual impurity limits, and viscosity parameters relevant to polymerization performance and final product quality.