What is Polyhexamethylene Biguanide CAS 32289-58-0?

Polyhexamethylene biguanide, commonly called PHMB or polyhexanide, is a cationic polymeric biguanide antimicrobial. CAS 32289-58-0 identifies the commercially common poly(hexamethylenebiguanide) hydrochloride form, which is generally represented as (C8H17N5)n.xHCl rather than a single fixed molecule.

Is PHMB the same as polyhexanide?

Yes, PHMB and polyhexanide are common names for the same polymeric biguanide active family. Different registry numbers may appear because of salt form, polymer-length convention, or regional naming, but the product title uses CAS 32289-58-0 for the hydrochloride polymer.

What is the typical commercial form of PHMB?

PHMB is often supplied as a colorless to pale yellow aqueous solution with about 20% active content, although solid grades are also available. Commercial solution specifications commonly include active content, pH, density, and water miscibility, and should be confirmed for the selected grade.

How does PHMB control microorganisms?

PHMB is a broad-spectrum cationic antimicrobial that disrupts microbial cell membranes. It is effective at low concentrations against many Gram-positive and Gram-negative bacteria, fungi, yeasts, and algae, and is used in systems where a non-chlorine biocide is preferred.

Where is PHMB used and how should it be stored?

It is used in industrial and recreational water treatment, hygiene and preservation formulations, surface sanitation, and textile antimicrobial finishing. Store the liquid in tightly closed, corrosion-resistant containers in a cool, dry, ventilated area away from direct sunlight and strong oxidizing agents, and dilute according to the target application and local regulations.

Polyhexamethylene Biguanide (PHMB) CAS 32289-58-0

Polyhexamethylene Biguanide, also called PHMB or polyhexanide, CAS 32289-58-0, is a cationic polymeric biguanide antimicrobial supplied as an aqueous solution and positioned for industrial and formulation-based microbial control. Confirm the required grade, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 32289-58-0
Synonyms: Polyhexanide; Polyhexamethylene Biguanide Hydrochloride; PHMB
Grade: Industrial / formulation grade
Package: Standard liquid chemical packaging

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Product Description

Polyhexamethylene Biguanide (PHMB) CAS 32289-58-0 is a cationic polymeric biguanide antimicrobial, generally represented as (C8H17N5)n.xHCl.

Synonyms: Polyhexanide; Polyhexamethylene Biguanide Hydrochloride; PHMB.

CAS: 32289-58-0.

It is supplied as a colorless to pale yellow aqueous solution.

It is positioned as a broad-spectrum antimicrobial for industrial and formulation-based microbial control.

It is used in industrial and recreational water treatment for microbial control.

It is used in hygiene and preservation formulations and surface sanitation.

It is used in textile and material antimicrobial finishing processes.

It disrupts microbial cell membranes at low concentrations against many bacteria, fungi, yeasts, and algae.

It is useful in systems where a non-chlorine biocide is preferred.

Commercial solution specifications commonly include about 20% active content, pH, density, and water miscibility.

Confirm the required grade, active content, pH, appearance, and related specifications for the chosen grade.

Check compatibility with the target formulation or treatment system and confirm dilution according to local regulations.

Store in tightly closed, corrosion-resistant containers in a cool, dry, ventilated area, away from direct sunlight and strong oxidizing agents.

Keep containers sealed to prevent contamination and maintain stability.

Confirm packaging suitable for the liquid form and order quantity, and follow the current SDS.

Confirm grade, packaging, and specification as required.

The page is an RFQ entry point and does not state stock, price, MOQ, or fixed lead time.

For an RFQ, state the intended application, required grade, quantity, packaging, destination, and document needs.

FAQ - Technical & Supply Chain

Q:
What is Polyhexamethylene Biguanide CAS 32289-58-0?

A: Polyhexamethylene biguanide, commonly called PHMB or polyhexanide, is a cationic polymeric biguanide antimicrobial. CAS 32289-58-0 identifies the commercially common poly(hexamethylenebiguanide) hydrochloride form, which is generally represented as (C8H17N5)n.xHCl rather than a single fixed molecule.
Q:
Is PHMB the same as polyhexanide?

A: Yes, PHMB and polyhexanide are common names for the same polymeric biguanide active family. Different registry numbers may appear because of salt form, polymer-length convention, or regional naming, but the product title uses CAS 32289-58-0 for the hydrochloride polymer.
Q:
What is the typical commercial form of PHMB?

A: PHMB is often supplied as a colorless to pale yellow aqueous solution with about 20% active content, although solid grades are also available. Commercial solution specifications commonly include active content, pH, density, and water miscibility, and should be confirmed for the selected grade.
Q:
How does PHMB control microorganisms?

A: PHMB is a broad-spectrum cationic antimicrobial that disrupts microbial cell membranes. It is effective at low concentrations against many Gram-positive and Gram-negative bacteria, fungi, yeasts, and algae, and is used in systems where a non-chlorine biocide is preferred.
Q:
Where is PHMB used and how should it be stored?

A: It is used in industrial and recreational water treatment, hygiene and preservation formulations, surface sanitation, and textile antimicrobial finishing. Store the liquid in tightly closed, corrosion-resistant containers in a cool, dry, ventilated area away from direct sunlight and strong oxidizing agents, and dilute according to the target application and local regulations.

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