Zinc Pyrithione (ZPT) is a coordination complex of zinc and pyrithione that acts by disrupting membrane transport processes and cellular metabolism in microbes. It offers both bacteriostatic and fungistatic activity and is especially effective in controlling dandruff, seborrheic dermatitis, and microbial degradation of materials. ZPT is insoluble in water but disperses well in surfactant-based formulations and polymers. It remains stable under UV and heat exposure, making it suitable for high-performance coatings, plastics, and personal care products. Its proven safety and regulatory acceptance across global markets have solidified its use in daily-use products and durable materials.
Effective Against Fungi & Bacteria – Controls Malassezia, Aspergillus, Staphylococcus, and other strains
Long-Lasting Performance – Offers persistent antimicrobial protection even in harsh environments
UV & Heat Stable – Maintains efficacy in coatings, plastics, and high-temperature formulations
Globally Approved for Cosmetics – Used safely in personal care products under regulated levels
Low Leaching Profile – Ideal for applications requiring minimal migration or wash-off
Broad Compatibility – Disperses in surfactants, emulsions, polymers, and coating matrices
Personal Care Products – Used in anti-dandruff shampoos, soaps, and scalp treatments for fungal control
Paints & Coatings – Prevents microbial degradation and staining in interior and exterior paints
Plastics & Polymers – Incorporated into PVC, polyurethane, and silicone for long-term microbial resistance
Adhesives & Sealants – Protects water-based sealants and glues from bacterial spoilage
Fabric & Leather Treatments – Prevents microbial odor and discoloration in treated surfaces
Textile Finishing – Used in technical textiles and medical fabrics for durable antimicrobial effect
| Property | Details |
|---|---|
| Product Name | Zinc Pyrithione |
| Chemical Name | Bis(1-hydroxy-2(1H)-pyridinethionato-O,S) zinc |
| Chemical Type | Pyrithione-based coordination complex |
| Active Ingredient | Zinc Pyrithione (≥48% assay, depending on grade) |
| Physical Form | Powder or aqueous dispersion |
| Appearance | White to pale yellow powder or cream-colored dispersion |
| Odor | Odorless to mild characteristic odor |
| pH (1% Dispersion) | ~6.0 – 8.0 |
| Solubility | Insoluble in water, dispersible in surfactants |
| Density | ~1.5 g/cm³ (powder) |
| Melting Point | ~240°C (decomposes) |
| Flash Point | Non-flammable |
| Recommended Use Level | 0.3% – 1.0% in shampoos; 0.1% – 0.5% in coatings/plastics |
| pH Stability Range | 4 – 9 |
| Shelf Life | 24 months in sealed, dry conditions |
| Packaging Options | 25 kg fiber drums, HDPE containers, custom-size bags |
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