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Silver Zirconium Phosphate (Ag–ZrP) is a high-performance inorganic antimicrobial pigment/additive designed to provide durable, long-term hygiene protection in ceramic bodies, slips, engobes, and glazes—especially for applications requiring high temperature stability and wash resistance.
At its core is a crystalline zirconium phosphate lattice with a layered / framework-like ion-exchange structure.
The phosphate network presents negatively charged sites that can accommodate and stabilize silver ions (Ag⁺) within the crystal matrix, keeping silver in a bound, protected form rather than as a free silver salt.
In Ag–ZrP, silver is held within the zirconium phosphate structure like a controlled ion reservoir. When the finished ceramic surface is exposed to moisture and ionic species (H⁺/Na⁺ and other ions), a regulated ion-exchange / diffusion mechanism releases trace levels of Ag⁺ over time. This controlled release supports sustained antimicrobial performance, minimizing rapid depletion and enabling long service life.
The robust inorganic phosphate matrix helps stabilize silver, reduce premature deactivation, and maintain efficacy under harsh conditions such as repeated washing, detergents, humidity, and elevated temperatures. This makes Silver Zirconium Phosphate particularly suitable for ceramic systems used in hygienic, high-touch, and wet-area environments.
Released Ag⁺ disrupts microbial activity by damaging cell membranes, binding to thiol-containing proteins/enzymes, and interfering with replication and metabolism—helping suppress surface microbial growth on treated ceramic products.
Silver Zirconium Phosphate is therefore an ideal additive for antimicrobial ceramic tiles, sanitaryware glazes, and durable ceramic coatings, delivering hygiene functionality with an inorganic, mineral-based chemistry profile.
Silver Zirconium Phosphate Antimicrobial / Ag–ZrP Antimicrobial Powder / Silver Phosphate Ceramic Antimicrobial
Inorganic powder (heat-stable antimicrobial)
Typically not classified as dangerous goods (confirm with SDS)
0.05% – 0.30% (optimize by glaze/body system, firing, and target performance)
Adds durable antibacterial performance in transparent/opaque glazes for tiles and sanitary ceramics.
Suitable for wash basins, WC surfaces, urinals, and shower-area ceramics requiring long-term hygiene.
Supports hygienic tiles for hospitals, schools, malls, kitchens, and public washrooms.
Can be incorporated into ceramic bodies to retain antimicrobial function even under abrasion and wear.
Useful for ceramic-coated handles, knobs, architectural panels, and other high-contact surfaces.
Compatible with slips/engobes/printed layers to impart antimicrobial functionality to decorated ceramics.
| Property | Typical Value |
|---|---|
| Appearance | White, free-flowing powder |
| True Density | ~0.125 g/cc |
| Crush Strength (Isostatic) | ~250 psi |
| Average Particle Size (D50) | ~65 µm |
| Top Cut Particle Size | ~120 µm |
| Chemical Composition | Soda-lime borosilicate glass |
| Shape | Hollow spherical |
| Solubility | Insoluble in water |
| Combustibility | Non-combustible |
Sustained action via controlled Ag⁺ release from zirconium phosphate structure.
Inorganic matrix supports performance retention through ceramic processing and demanding service conditions.
Highly resistant to leaching and wash-off; suitable for wet-area ceramics and frequent cleaning.
Avoids volatility and odor issues typical of many organic antimicrobial additives.
Applicable in glazes, slips, engobes, and bodies with proper dispersion and dose optimization.
When well-dispersed and optimized, maintains appearance and coating integrity of ceramic surfaces.
Generally shipped as non-hazardous / not regulated (confirm with latest SDS/COA).
Use ventilation and suitable dust mask/respirator during handling and mixing.
Use safety goggles/face shield and gloves; powder may cause irritation.
No eating/drinking/smoking during handling; wash hands after use.
Prevent uncontrolled release to drains; dispose as per local rules for silver-containing inorganic waste.
Avoid dry sweeping; use HEPA vacuum or damp cleanup to minimize airborne dust.
Inorganic mineral product; not flammable under normal conditions.
Follow SDS for PPE, first-aid, storage, and disposal requirements.
Prevent moisture ingress and contamination.
Avoid damp conditions and direct water contact.
Store away from heat sources and prolonged sunlight.
Reseal after sampling; desiccant recommended if humidity is high.
Keep away from strong acids/alkalis and reactive chemicals.
Use FIFO; track batch numbers and shelf-life.
Minimize dust; clean spills promptly.
Sealed moisture-resistant inner pack with outer carton.
Sealed HDPE container or laminated bag-in-box.
Industrial HDPE drum or multi-wall laminated bag with inner liner.
Product name, batch/lot no., net weight, and handling/storage instructions.
Bulk packs and private labeling available.