Zinc PYRION™ Powder is a solid, powder form of zinc pyrithione preservative (CAS No. 13463-41-7) that provides antimicrobial protection in a wide variety of industrial applications.
Zinc PYRION™ is a zinc pyrithione (CAS No. 13463-41-7) chemical preservative (also called pyrithione zinc, ZPT, ZnPT, or ZnP) that protects against unwanted microbial growth and degradation. Zinc PYRION™ Powder grade is the concentrated off-white solid powder form of zinc pyrithione and has low solubility in water. Zinc PYRION™ 48% Liquid is the dispersed version of zinc pyrithione powder in water and an alternative option for water-based applications that desire a zinc pyrithione antimicrobial.
Zinc pyrithione is a highly effective broad-spectrum antimicrobial that inhibits the growth of fungi, bacteria, and algae. It is particularly effective in dry film antifungal applications. Additionally, due to its low water solubility, zinc pyrithione powder is especially effective in applications that require low leaching and long-lasting protection. Zinc pyrithione powder is thermally stable at high temperatures and does not begin decomposing until 240 Celsius. Zinc pyrithione is stable between pH 4 and 9.5. When in contact with heavy metal ions, such as iron and copper-based chemicals, zinc pyrithione can cause discoloration due to a chemical process called transchelation. Zinc pyrithione also is sensitive to light and strong oxidizing and reducing agents.
Zinc PYRION™ is approved for use as a chemical biocide for a wide range of both indoor and outdoor industrial applications susceptible to microbial attack. Common and approved applications for Zinc PYRION™ biocide include textiles, construction materials, paints, adhesives, plastics, caulks, sealants, and marine anti-fouling paints.
Typical treat rates vary by application, but are typically no more than 0.5 wt% for coatings applications. We recommend testing several levels (for example 2000, 3000, 4000, and 5000 ppm) to test the efficacy of protection. Contact a technical representative for more information and to confirm the recommended treat rate for your specific application. Testing is available through Janssen's laboratory for several industry-standard tests.
Zinc PYRION™ is not an approved active ingredient through ChemPoint for personal care and cosmetic grade applications, which include dandruff shampoo and hair care, bar soaps, cosmetics, and skin care products.
Typical Properties:
Appearance: Light beige to beige powder
Purity (potentiometric titration): 97.0 wt% min
Loss on drying (105°C): 2 wt% min
Particle size distribution: D50: 10 μm max; D99: 35 μm max
Relative density: 1.8106 at 22.5°C
Bulk density: 0.41 g/ml
pH (5% dispersion in water): 6.5–8.5
Vapor pressure: < 6.6 x 10-4 Pa at 25°C
Solubility in water: 4.93 mg/l at 20.0°C; 6.11 mg/l at 30.0°C
Synonyms or codes: Bis(2-pyridylthio-1-oxide)zinc, zinc 2-pyridinethiol-1-oxide, zinc pyridinethione, pyrithione zinc, zinc pyrithione
CAS No. 13463-41-7
Primary Chemistry: Zinc pyrithione, pyrithione zinc, ZPT, ZnP
Broad-spectrum antimicrobial action against fungi, bacteria, and algae
Low leaching
Heat stable to 480°F/250°C
Low water solubility
Cost-effective
Off-white powder form
Compatible with most polymers
Stable between pH 4 and 9.5
Full control of formulated treat rate
EPA approved for a wide range of industrial and food contact applications
Free testing available to measure efficacy of antimicrobial protection
Microbial growth in coatings, elastomers and plastics
Microbial growth of fungi, bacteria and algae
Leaching and short-lived microbial protection
Staining and odors from microorganisms
Expensive and difficult to handle biocides
Preservative incompatibility with resin or polymer
Poor thermal stability
Zinc PYRION™ is approved for use as an antimicrobial additive in the following applications:
Flooring adhesives
Caulks and sealants
Grouts and patching compounds
Architectural and industrial paints and coatings
Joint compounds, glazing compounds, and wood fillers
Carpet fibers and carpet backings
Rubber and rubber-backed bath mats
Foam underlay for carpets
Foam stuffing for cushions and mattresses
Wire and cable insulation
Vinyl, linoleum, and synthetic floor coverings
Wall coverings
Plastic furniture
Athletic flooring and mats
Mattress liners
Molding
Mats
Gaskets
Weather stripping
Coated fabrics for furniture cushions
Boat covers
Tents
Ductwork
Air filters and air filtration components and media
Awnings
Nonsurgical rubber gloves
Garbage bags and refuse containers
Garden hoses
Non-potable water pipes
Shower curtains
Sponge or fiber mops
Household-use mops
Toilet brush receptacles
Toothbrush receptacles
Nonmedical scrub brushes
Sink mats and drain boards
Storage containers and soap dish holders
Footwear
Laundered fabrics
Dry wall materials
Ceiling tiles
Food contact surfaces made from polymers
Zinc PYRION™ cannot be sold in the United States for use in dandruff shampoo or other hair, skin, and cosmetic products.
Janssen PMP offers several solutions to microbial growth in paints and coatings using their zinc and sodium pyrithione additive technology.
Microorganisms can compromise the appearance, functionality, and performance of plastics and textiles. Microbial growth on plastics can also impact human health. Janssen PMP offers antimicrobial solutions to extend the shelf life of plastic products and improve human hygiene.
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