Description

Sodium Pyrithione is a highly effective antimicrobial and antifungal agent widely used as a preservative and active ingredient. Its primary value lies in its broad-spectrum activity against bacteria, fungi, and yeasts, making it a critical component for product protection and hygiene. This compound is essential for manufacturers in the personal care, coatings, and industrial preservation sectors seeking reliable microbial control.

Application

• Personal Care & Cosmetics: A key preservative and anti-dandruff agent in shampoos, conditioners, hair tonics, and skin creams.
• Paints & Coatings: Used as a fungicide and algicide in water-based paints, adhesives, and polymer emulsions to prevent spoilage and surface growth.
• Industrial Fluids: Preservative for metalworking fluids, cooling water systems, and latex products to extend shelf life and maintain performance.
• Textile & Leather: Imparts antimicrobial properties to fabrics, leather goods, and related materials to prevent odor and degradation.
• Wood Protection: Used in treatments and stains to protect against mold, mildew, and fungal decay.
• Marine Antifouling: An active component in antifouling coatings for boats and underwater structures to inhibit biological growth.

Basic Information

Product Name	Sodium Pyrithione
CAS No.	3811-73-2
Molecular Formula	C5H4NNaOS
Molecular Weight	149.15 g/mol
Synonyms	Sodium 2-pyridinethiol-1-oxide; Sodium 2-mercaptopyridine N-oxide; Pyrithione Sodium; Omadine Sodium; Sodium Omadine; 1-Hydroxy-2(1H)-pyridinethione, sodium salt; 2-Mercaptopyridine N-oxide sodium salt
EINECS	223-296-5

Quality Control

Our Sodium Pyrithione is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay, identification, and impurity profiling, to ensure it meets precise specifications. A Certificate of Analysis (COA) is provided with every shipment to guarantee consistency, purity, and compliance with relevant industry standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
pH (1% Solution)	8.0 - 10.0
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.