eMAI New Materials

PHMG Polyguanidine Biocide

eMAI™ PHMG (polyhexamethylene guanidine hydrochloride) is a polymeric biocide. Its highly active guanidine groups give the polymer a positive charge, allowing it to readily adsorb onto bacterial and viral surfaces, inhibiting their division and rendering them incapable of reproduction. It also forms a film that blocks the respiratory channels of microorganisms, causing rapid suffocation and death. It features low toxicity, no irritation, and good long-term storage stability. Applications: Medical and hygiene: Used for surgical hand disinfection and skin/mucous membrane cleansing; can also be formulated into wipes and feminine washes—effective against bacteria, fungi, and viruses. Food and drinking water: For disinfection of food processing equipment and pipelines, as well as sterilization and algae control in drinking water and swimming pools—low residue and safe. Industrial and aquaculture: Controls bacterial diseases of fish and shrimp in aquaculture; serves as an antimicrobial finishing agent in textiles and papermaking; also used in oil production and wastewater treatment. Daily-use products: Added to laundry detergents and shampoos for mildew and dandruff control, or used for air and surface disinfection in public places (e.g., vehicles, aircraft).

Overview and Applications

The range comprises CleaW50 clarifier and PHMB, PHMG, 1227, triazine BK, and C/MIT biocides. Together they provide flocculation, clarification, microbial control, and slime removal for oilfield produced water, industrial circulating water, petrochemical wastewater, and related process-water treatment.

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