Polyhexamethylene guanidine

Polyhexamethylene guanidine (CAS 31961-54-3), also known commercially as Polisept, is a cationic polymeric biocide effective against a broad spectrum of bacteria, fungi, and algae.

Where is Polyhexamethylene guanidine used?

• Water treatment: disinfects potable and process water while flocculating suspended solids
• Personal care and cosmetics: preservative in rinse-off and leave-on formulations
• Textile and leather: durable antimicrobial finishes for fabrics and hides
• Industrial and household cleaning: active biocidal component in surface disinfectants and sanitizing concentrates
• It functions as both a preservative and a coagulant-flocculant.

Good to know: Buyers sourcing for personal care or pharmaceutical end uses should confirm grade documentation and impurity profiles with the supplier.

Commercial specifications

• Active content typically 20% to 25%