Product name: Copper Pyrithione
English alias: Bis(1-hydroxy-2(1H)-pyridinethionato-O,S)copper; CPT; CuPT
CAS:14915-37-8
Molecular formula: C10H8CuN2O2S2
Appearance: Light blue to bluish-green powder
Package: 25kg/drum
What is Copper Pyrithione？
Copper Pyrithione is a coordination compound derived from pyrithione and copper. It is a broad-spectrum antimicrobial and antifungal agent primarily used in industrial and marine applications. Its strong biocidal properties make it effective in protecting coatings, paints, and polymers from microbial and fungal contamination. It is widely applied in antifouling marine paints to prevent bioaccumulation on ship hulls and submerged surfaces. Copper Pyrithione is also used in some specialized coatings for wood preservation and construction materials. It appears as a light blue to bluish-green powder and is insoluble in water but soluble in organic solvents.
COA
Items | Standards | Testing Results |
Appearance | Olive green powder | Olive green powder |
Assay | ≥97% | 97.82% |
pH | 6.0 – 8.0 | 6.48 |
Melting Point | ≥260℃ | 267.8℃ |
Drying Loss | ≤0.5% | 0.22% |
Application
Used as an antifouling agent in marine coatings to prevent the growth of algae, barnacles, and other marine organisms
Applied in architectural paints and construction materials to inhibit mold and mildew growth
Functions as a preservative and antifungal additive in polymer-based systems and wood treatments
Used in some industrial coatings and sealants to improve microbial resistance and durability
Effective as a dry film preservative in specialty coatings and adhesives
Safety profile
Copper Pyrithione is a powerful biocide and should be handled with care. It can be harmful if swallowed or inhaled and may cause irritation to skin and eyes upon contact. Appropriate protective clothing, gloves, and eye protection are recommended during handling. It is toxic to aquatic organisms and should be used and disposed of in accordance with environmental regulations. Avoid release into waterways.
Storage requirements
Store in a cool, dry, and well-ventilated place
Keep container tightly sealed
Avoid exposure to moisture and direct sunlight
Keep away from incompatible substances such as strong oxidizing agents
Transport & Packaging
Copper Pyrithione for industrial applications is available in various packaging options. Standard packaging includes 25 kg fiber drums or other customized solutions according to customer needs. Transport should comply with applicable regulations for environmentally hazardous substances.
