7903.10.00.00/Zinc Dust for Rubber Vulcanization/China

Zinc Dust for Rubber Vulcanization from China

High-purity zinc dust produced by condensation of zinc vapor, featuring spherical particles finer than 63 microns, used as an activator in rubber vulcanization processes. It meets Chapter 79 definitions with over 85% metallic zinc content and at least 80% passing a 63-micron sieve. Classified under HTS 7903.10.00.00 as zinc dust due to its production method and particle characteristics.

Duty Rate — China → United States

35%

Rate breakdown

9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
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Import Tips

• Verify zinc dust certification showing at least 85% metallic zinc and 80% of particles passing 63-micron sieve per Chapter 79 note (c)

• Provide lab analysis reports during customs clearance to distinguish from zinc powders; misclassification as powder leads to rejection

• Check for REACH compliance if importing to EU markets, as zinc dust is regulated for environmental release