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Polyhexamethylene Guanidine Hydrochloride (PHMG)

CAS No.: 57028-96-3

Molecular Formula: (C7H15N3)n.x(HCl)

Molecular Weight: 1000-3000

Structural Formula:


polyhexamethylene guanidine

polyhexamethylene guanidine


Polyhexamethylene guanidine hydrochloride is a kind of colorless or light yellow solid or liquid. It is soluble in water and free of erosion. PHMG biocide is environmental-friendly and free from iodine, chlorine, aldehyde, and alcohol.


AppearanceColorless or light yellow, solid oor liquid
Active Components≥ 25%
Solubility in WaterComplete
Decomposition Temperature> 400℃
Surface Tension (0.1% in Water)49.0 dyn/cm2
Biological DecompositionComplete
FunctionHarmless And Bleach-free
Toxicity1% PHMG LD 50 > 5000 mg/kg BW
Corrosiveness (Metal)Corrosive-free to stainless steel, copper, carbon steel and aluminum


Polyhexamethylene guanidine hydrochloride is able to completely destroy a variety of bacteria, including Colon Bacillus, S. Aureus, C. Albicans, N. Gonorrhoeae, Salm. Th. Murum, Pseudomonas Aeruginosa, Listeria Monocytogenes, S.Dysenteiae, ASP. Niger, Brucellosis, C. Parahaemolyticus, V. Alginolyticus, V. Anguillarum, A.Hydrophila, Sulfate Reduction Bacteria, etc.

The PHMG biocide can be used to clean skin and mucous membranes, clothes, surfaces, fruits, and indoor air. It is also applicable for disinfection in aquaculture, livestock farming, and oil exploration.

This environmental-friendly biocide has good preventive and curative effects on fungus-caused farming diseases such as Grey Mildew, Sclerotinia Rot, Bacterial Spot, Rhizoctonia Solani and Phytophthora, etc.

Package and Storage

Packed in 5kg/PE drum×4/ box, 25kg/PE drum and 60kg/PE drum. Sealed storage at room temperature, away from direct sunlight.


PHMG, Polyhexamethyleneguanidine Hydrochloride

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