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Sodium Pyrithione for Antimicrobial and Antifungal Protection

Sodium Pyrithione (NaPT; C₅H₄NOSNa), also known as Pyrithione Sodium, is an antimicrobial and antifungal compound supplied as a white to off-white powder or a stable 40% liquid solution, readily soluble in water and ethanol. It is effective against molds such as Aspergillus niger and bacteria such as E. coli, and is widely used in cosmetics, coatings, textiles, leather, water treatment, and marine antifouling as a preservative, bactericide, and dyeing auxiliary. Its broad-spectrum action involves chelating essential metal ions (e.g., Fe²⁺, Cu²⁺), disrupting microbial cell membranes, and inhibiting ATP synthesis. NaPT offers long-lasting protection, good thermal stability, and a relatively low environmental impact.

Chemical Name :
Sodium Pyrithione
Application :
Ships and containers, Architectural Coatings, Leather and Textile Industry, etc.
Appearance :
powder
brand :
Kabasph

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product introduction

Sodium Pyrithione, with the chemical formula C₅H₄NSNaO, is an antimicrobial and antifungal compound, also known as Pyrithione Sodium. The pure substance appears as a white or off-white powder, readily soluble in water and ethanol. It is commonly formulated as a 40% liquid solution and remains stable under al kaline or neutral conditions.

It demonstrates significant inhibitory effects against molds such as Aspergillus niger and bacteria such as E. coli, and is widely used in cosmetics, coatings, textiles, leather, and other fields. It can function as a preservative, bactericide, and dyeing auxiliary.

English alias: 2-Mercaptopyridine N-oxide sodium salt; 1-Hydroxy-2-pyridinethione sodium salt; 2-Mercaptopyridine-1-oxide sodium salt; 2-Pyridinethiol-1-oxide sodium salt; Pyrithione sodium salt.

Marine anti-fouling products series:

Product	Chemical	Form	Functions
Copper Umiguard Powder	Copper Pyrithione(CPT)	Powder	Soft-shell organisms, algaeand fungi
Zinc Umiguard Powder	Zinc Pyrithione(ZPT)	Powder	Soft-shell organisms, algaeand fungi
Copper Umiguard Paste	Copper Pyrithione(CPT)	Liquid	Soft-shell organisms, algaeand fungi
Zinc Umiguard Paste	Zinc Pyrithione(ZPT)	Liquid	Soft-shell organisms, algaeand fungi
Sodium Umiguard Powder	Sodium Pyrithione(NaPT)	Powder	Hard-shelled organisms aswell as shellfish and barnacles
Tralopyril	Tralopyril	Powder	Hard-shell organisms, algae and fungi
Zinc Acrylate SPC	Zinc Acrylate Resin Copper Pyrithione	Liquid	Anti-fouling paint resin

Mechanism of Action

SPT exerts its antimicrobial and antifungal effects through several mechanisms:

Chelation of metal ions: By binding to essential metal ions (such as Fe²⁺ and Cu²⁺), SPT inhibits the activity of key microbial enzymes.
Cell membrane disruption: SPT increases the permeability of microbial cell membranes, leading to leakage of cellular contents and ultimately cell death.
Inhibition of energy metabolism: SPT interferes with ATP synthesis, disrupting microbial energy production and inhibiting growth.This multifaceted action makes SPT effective against a wide range of bacteria, fungi, and algae.

Sodium Pyrithione Antimicrobial Agent

Advantages of Our Sodium Pyrithione

Long-lasting effect: Compared to traditional antifungal agents, SPT offers longer-lasting protection, reducing the need for frequent maintenance.
Good thermal stability: SPT remains active during the high-temperature curing processes used for powder and liquid coatings.
Eco-friendly: SPT is relatively safe and has a lower environmental impact compared to other chemical biocides, making it a preferred choice for many industries.

Applications of Our Sodium Pyrithione

Ships and containers
Metal surfaces exposed to marine environments
Architectural Coatings
Heavy-duty industrial machinery
Furniture and Household Coatings
Leather and Textile Industry
Water Treatment and Cooling Systems

Packaging & Storage:

The package is 80kg stainless steel barrel with 20kg high density polyethylene bag inside.

Confined space shall be stored separately, and the warehouse shall be kept as dry as possible.

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