Polyaminopropyl biguanide

Polyaminopropyl biguanide (CAS 133029-32-0), commonly referred to as PAPB or PHMB, is a polymeric antimicrobial agent used across industrial and personal care markets.

Where is Polyaminopropyl biguanide used?

• Personal care: preservative in rinse-off and leave-on products including contact lens solutions, eye drops, and skin cleansers
• Water treatment: algaecide and bactericide in swimming pools and cooling towers
• Textile and leather processing: antimicrobial finish imparting durable hygiene properties to fabrics
• Wound care and medical device cleaning: primary active biocide
• It delivers broad-spectrum biocidal activity against bacteria, fungi, and algae.

Good to know: Low irritation potential is a key formulation requirement for personal care uses. It is often utilized as an alternative to chlorine-based systems in water treatment environments.

Commercial specifications

• Aqueous solution, typically at 20% active concentration
• Material conforming to pharmacopoeial standards for healthcare applications
• Bulk supply in intermediate and large-volume quantities