Polyhexamethyleneguanidine hydrochloride
CAS 57028-96-3
EC 690-927-2
Formula (C6H16N2.CH5N3.ClH)x
MW 533.032 g/mol
Polymers & Resins Water TreatmentTextile, Leather & PaperPersonal Care & CosmeticsFood & Nutrition Preservation & BiocideCleaning & Degreasing
Description
Polyhexamethyleneguanidine hydrochloride (PHMG hydrochloride, CAS 57028-96-3) is a cationic polymeric biocide sold under trade names including Metacide and Hygisoft. It carries no assigned E-code and is classified under EC 690-927-2. The polymer backbone delivers sustained antimicrobial activity across a broad spectrum of bacteria and fungi.
In water treatment, PHMG hydrochloride disrupts microbial cell membranes through electrostatic binding, making it effective for cooling tower sanitation and process water disinfection. In textile and leather processing, it is applied as a durable antimicrobial finish, bonding to fibrous substrates to inhibit mould and bacterial growth during storage and end use.
The material is supplied as a solid and is subject to REACH registration requirements within the EU. Procurement teams should confirm biocidal product authorisation status under BPR (Regulation EU 528/2012) for their intended application and target market before sourcing.
In water treatment, PHMG hydrochloride disrupts microbial cell membranes through electrostatic binding, making it effective for cooling tower sanitation and process water disinfection. In textile and leather processing, it is applied as a durable antimicrobial finish, bonding to fibrous substrates to inhibit mould and bacterial growth during storage and end use.
The material is supplied as a solid and is subject to REACH registration requirements within the EU. Procurement teams should confirm biocidal product authorisation status under BPR (Regulation EU 528/2012) for their intended application and target market before sourcing.
Physical Properties
| Melting Point | >222°C (sub.) |
| Color | White to Off-White |
| Form | Solid |
Other Names
1,2-dibutylguanidinePolyhexamethylene Guanidine HydrochloridePHMGHygisoftMetacidePHMG hydrochlorideMetacide (fungicide)POLY(HEAMETHYLENEGUANIDINECHLORIDE)Poly(hexamethylendiamine guanidinium chloride)
Related Products
Need a chemical? Get a quote within 24 hours.