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. It delivers broad-spectrum biocidal activity against bacteria, fungi, and algae.

This chemical functions as both a preservative and a surface-active disinfectant. Its polymeric structure allows effective performance at low use concentrations across diverse formulation types and industrial applications.

In personal care, PAPB is used as a preservative in rinse-off and leave-on products including contact lens solutions, eye drops, and skin cleansers. Low irritation potential is a key formulation requirement for these uses.

Water treatment operations use it as an algaecide and bactericide in swimming pools and cooling towers. It is often utilized as an alternative to chlorine-based systems in these specific environments.

Textile and leather processing facilities apply it as an antimicrobial finish to impart durable hygiene properties to fabrics. This treatment ensures long-lasting protection for various treated materials and industrial textiles.

In wound care and medical device cleaning formulations, it functions as a primary active biocide. It is particularly valued where residual antimicrobial action is required for safety and hygiene standards.

Polyaminopropyl biguanide is supplied as an aqueous solution, typically at 20% active concentration. Technical and cosmetic-grade specifications are the most commercially available forms for industrial procurement.

Some suppliers offer material conforming to pharmacopoeial standards for healthcare applications. Bulk supply is standard in intermediate and large-volume quantities for industrial buyers and manufacturing facilities.