Description

Pyrithione is a potent organosulfur compound widely recognized for its exceptional antimicrobial and antifungal properties. Its primary value lies in its ability to effectively inhibit the growth of bacteria, yeast, and fungi, making it a critical functional ingredient in preservation and personal care. This compound is essential for manufacturers in the cosmetics, industrial preservation, and agrochemical sectors seeking reliable biocidal activity. Pyrithione CAS NO 1121-30-8 is particularly valued for its stability and efficacy in formulated products.

Application

• Cosmetics & Personal Care: Key active ingredient in anti-dandruff shampoos, conditioners, and scalp treatments.
• Industrial Preservation: Used as a biocide in metalworking fluids, paints, coatings, and adhesives to prevent microbial spoilage.
• Agrochemicals: Employed as a fungicide for crop protection and in material preservation.
• Textile & Leather: Incorporated as an antimicrobial agent to prevent odor and degradation in fabrics and hides.
• Polymer Stabilization: Acts as a stabilizer and antimicrobial agent in various plastic and polymer formulations.
• Marine Antifouling: A component in antifouling paints for ships and underwater structures.

Basic Information

Product Name	Pyrithione
CAS No.	1121-30-8
Molecular Formula	C5H5NOS
Molecular Weight	127.16 g/mol
Synonyms	2-Mercaptopyridine N-oxide; Pyrithione Zinc precursor; 1-Hydroxy-2(1H)-pyridinethione; 2-Pyridinethiol-1-oxide; Omadine; Sodium Pyrithione precursor; PT; 2-Mercaptopyridine-1-oxide
EINECS	214-323-6

Quality Control

Our Pyrithione is produced under a strict quality management system to ensure batch-to-batch consistency and high purity. Quality assurance includes comprehensive testing for identity, potency, and impurity profiles. Certificates of Analysis (COA) documenting specifications such as assay, related substances, and residual solvents are provided with each shipment. We support compliance with relevant industry standards for cosmetic and industrial applications.

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 incompatible materials such as strong oxidizing agents. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Off-white to pale yellow crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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