Flame Retardant Zinc Dust Filler
Zinc dust acting as a synergist in intumescent flame retardants for polymers, vapor-produced with 85% minimum zinc and 80% of particles through a 63-micron mesh. This product qualifies as zinc dust under Chapter 79 because it meets the subheading note criteria of at least 80% of particles passing a 63 μm sieve and contains at least 85% metallic zinc.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the zinc dust is blended with other flame retardant chemicals
Prepared chemical products for industrial use are classified in Chapter 38.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the product is in pure form—if pre-mixed with flame retardant compounds, it may be classified as a preparation
• Provide sieve analysis and zinc content documentation
• Verify whether the product meets the definition of zinc dust exactly, as borderline purity may lead to reclassification
Related Products under Tariff item 7903.10.00
3D Printing Zinc Dust Feedstock
Ultra-fine spherical zinc dust optimized for metal 3D printing powder bed fusion, produced via vapor condensation with a tight particle size distribution of 15-45 μm (all passing a 63 μm sieve) and 99.5% zinc purity. This product meets the Chapter 79 subheading note definition of zinc dust, which requires at least 80% of particles to pass through a 63 μm sieve and at least 85% metallic zinc content.
Anti-Corrosion Zinc Dust Primer Additive
Industrial zinc dust specifically formulated for epoxy primers, condensed from vapor with 89% zinc content and 82% of particles under 63 microns per sieve analysis. This product qualifies as zinc dust under Chapter 79 because it meets the subheading note criteria of at least 80% of particles passing a 63 μm sieve and contains at least 85% metallic zinc.
Battery Manufacturing Zinc Dust
Specialty zinc dust for alkaline battery electrode preparation, vapor-condensed with 87% zinc and a particle distribution ensuring 80% passage through a 63-micron sieve. This product meets the Chapter 79 subheading note definition of zinc dust, which requires at least 80% of particles to pass through a 63 μm sieve and at least 85% metallic zinc content.
Catalyst Activation Zinc Dust
Reactive zinc dust for activating hydrogenation catalysts in pharmaceutical and chemical synthesis, vapor-condensed with particles under 10 μm spheres and 96% metallic zinc. This product meets the Chapter 79 subheading note definition of zinc dust, requiring at least 80% of particles to pass through a 63 μm sieve and at least 85% metallic zinc content.
Cosmetics Micronized Zinc Dust
Pharmaceutical-cosmetic grade zinc dust, vapor condensed with spheres averaging under 20 microns (99% under 63 μm) and 98% pure metallic zinc, used for pigment-free cosmetics. This product qualifies as zinc dust under Chapter 79 because it meets the subheading note criteria of at least 80% of particles passing a 63 μm sieve and contains at least 85% metallic zinc.
Electronics Sintering Zinc Dust
High-fineness zinc dust from vapor process with 86% metallic zinc and spherical particles averaging 10-20 microns (all passing a 63-micron sieve), used in electronics for sintering conductive pastes. This product meets the Chapter 79 subheading note definition of zinc dust, requiring at least 80% of particles to pass through a 63 μm sieve and at least 85% metallic zinc content.