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.
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 formulated with other catalytic agents
Prepared catalysts are classified in Chapter 38, not as base metal products.
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
• Document the production method (vapor condensation) and particle size distribution to support classification as zinc dust
• If the product is coated or treated with other substances, verify it still meets the definition
• Check if the product is subject to any import permits under the Chemicals Management Plan
Related Products under Tariff item 7903.10.00
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