Zinc Pyrithione
ZPT, Zinc Omadine.
- CAS
- 13463-41-7
- EC
- 236-671-3
- Sectors
- Personal Care & Cosmetics, Coatings, Adhesives, Sealants & Elastomers
Zinc Pyrithione (CAS 13463-41-7) is a Technical Grade antimicrobial and antifungal coordination complex supplied as a white powder or aqueous dispersion, with low solubility and efficacy against Malassezia fungi, used mainly in anti-dandruff shampoos, hair care formulations, and marine and architectural coatings. In the personal care industry, it is the gold standard for anti-dandruff shampoos , providing targeted relief and preventing scalp irritation. Its stability in surfactant systems makes it a reliable choice for long-lasting hair care formulations. Beyond cosmetics, it is a highly effective biocide in architectural paints and marine coatings. It prevents the growth of algae and mildew on exterior surfaces, maintaining the aesthetic and structural integrity of buildings and vessels in high-moisture environments.
Typical Properties
| Molecular formula | C10H8N2O2S2Zn |
|---|---|
| Molecular weight | 317.7 g/mol |
| Form | Powder |
| Color | White to Orange to Green |
| Odor | Mild Characteristic |
| Melting point | 240 °C (decomp) |
| Density | 1.782 g/cm³ @ Temp: 25 °C |
| Water solubility | Insoluble (<0.1 g/100 mL at 21 °C) |
| GHS signal word | Danger · Corrosive, Acute toxicity, Irritant / harmful, Health hazard, Environmental hazard |
| HS code | 29419000 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Zinc Pyrithione
Applications
- Anti-Dandruff Shampoos: Acts as the primary active ingredient to eliminate scalp fungi and reduce skin flaking.
- Antifouling Paints: Added to marine coatings to prevent biofouling on ship hulls and underwater structures.
- Polymer Protection: Integrated into PVC and other plastics to provide permanent antimicrobial resistance for high-contact surfaces.
Safety & Risks
Classified as Toxic if Inhaled and Serious Eye Damaging. It is a known Reproductive Toxicant in concentrated forms. Always wear P100 Respirators and Full Chemical Protection during handling.
Packaging
25 kg Fiber Drums, 1,000 kg IBCs (for dispersions), and 1 kg vacuum packs.