Polyquaternium-1

Polyquaternium-1 (CAS 75345-27-6), also known as Polidronium chloride, is a cationic polymer.

Where is Polyquaternium-1 used?

• Ophthalmic and contact lens care: preservative at low concentrations with broad-spectrum antimicrobial efficacy and good ocular tolerance
• Personal care: conditioning agent in shampoos and conditioners that deposits onto hair and skin to improve texture and reduce static
• Water treatment: microbial control and surface modification of process equipment
• Textile and leather processing: modifies fiber surfaces, improving dye uptake and imparting antistatic or softening effects
• It functions as a preservative, conditioning agent, and surface modifier.

Good to know: Buyers should confirm active polymer content, counterion specification, and viscosity range when evaluating lots for formulation compatibility.

Commercial specifications

• Active content concentrations vary by grade and supplier specification