Description

Bispyrithione CAS NO 3696-28-4 is a highly effective, broad-spectrum antimicrobial and antifungal agent belonging to the pyrithione class. This compound is valued for its potent biocidal activity and stability in various formulations, making it a critical component for product preservation and hygiene. It is primarily sought by manufacturers in the personal care, industrial fluids, and coatings industries seeking reliable microbial control.

Application

• Personal Care & Cosmetics: Used as a preservative and active ingredient in shampoos, conditioners, soaps, and skincare products to control dandruff-causing fungi and bacteria.
• Industrial Fluids: Acts as a biocide in metalworking fluids, cooling water systems, and lubricants to prevent microbial degradation and spoilage.
• Paints & Coatings: Incorporated into water-based paints, adhesives, and polymer emulsions to inhibit mold and mildew growth, extending product shelf life.
• Textile & Leather Treatment: Applied as an antimicrobial agent for fabrics and leather goods to prevent odor and material degradation.
• Wood Preservation: Used in treatments to protect wood from fungal decay and surface mold.
• Marine Antifouling: An active component in certain antifouling coatings for boats and underwater structures.

Basic Information

Product Name	Bispyrithione
CAS No.	3696-28-4
Molecular Formula	C10H8N2O2S2Zn
Molecular Weight	317.70 g/mol
Synonyms	Zinc Pyrithione; Zinc Pyrithione (1:1); Zinc 2-Pyridinethiol-1-oxide; Zinc 2-Mercaptopyridine N-oxide; Zinc Omadine; Pyrithione Zinc; ZPT; Bis(2-pyridylthio)zinc 1,1'-dioxide
EINECS	223-036-3

Quality Control

Our Bispyrithione is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, potency, and heavy metal content. Certificates of Analysis (COA) are provided with every shipment to guarantee consistent quality and traceability for our global B2B clients.

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). Keep away from strong acids and strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (Zinc Pyrithione)	≥ 95.0%
Zinc Content	19.0% - 21.5%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Particle Size (Typical)	Contact for details

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