Poly(hexamethylenebicyanoguanide-hexamethylenediamine) hydrochloride

Poly(hexamethylenebicyanoguanide-hexamethylenediamine) hydrochloride (CAS 27083-27-8), commercially recognized as Polyhexamethylene biguanide hydrochloride — or PHMB — is a polymeric antimicrobial agent effective against a broad spectrum of bacteria, fungi, and algae. It functions as a preservative and biocide across industrial, personal care, and healthcare applications. In water treatment, PHMB controls microbial growth in swimming pools, cooling towers, and industrial process water as an alternative to chlorine-based systems.

Personal care formulators incorporate it as a preservative in rinse-off and leave-on products including shampoos, skin cleansers, and contact lens solutions. In wound care and surgical preparation, it is used in antiseptic irrigations and antimicrobial dressings. These medical applications are particularly valued where residual activity is required. Textile and leather processors apply it to impart durable antimicrobial finishes to fabrics and treated surfaces, ensuring long-term protection against microbial degradation.

PHMB is most commonly supplied as an aqueous solution, with 20% concentration being the standard commercial form. Technical and cosmetic-grade specifications are available to meet the requirements of industrial versus personal care end uses. Bulk supply is typically offered in drums or IBC containers suited to high-volume industrial procurement. Our material meets rigorous quality benchmarks to ensure consistency and efficacy across all specialized manufacturing sectors and global distribution channels.