Pharmaceutical Zinc Dust USP Grade
Ultra-pure zinc dust meeting USP standards, produced via vapor condensation with >97% metallic zinc and particles 80%+ through 63-micron sieve, used in pharmaceutical ointments and topical preparations. Classified as zinc dust under HTS 7903.10.00.00 based on physical form and chapter notes.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If processed into medicated powders
Zinc dust in finished pharmaceutical forms like ointments moves to Chapter 30 as medicaments.
If non-USP coarser powder grades
Pharma rejects coarser zinc powders; only vapor-condensed dust qualifies under strict sieve rules.
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Import Tips & Compliance
• Include USP/EP certificate of analysis confirming metallic zinc and particle specs
• For FDA-regulated imports, file prior notice via ACE even for bulk intermediates
• Package in inert atmosphere to prevent oxidation, which could alter classification
Related Products under HTS 7903.10.00.00
Zinc Dust for Rubber Vulcanization
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.
Metallurgical Grade Zinc Dust
Spherical zinc dust from vapor condensation, with 90%+ metallic zinc purity and particle size predominantly under 63 microns, applied in metallurgy for alloying and surface coating. It strictly adheres to HTS 7903.10.00.00 criteria as defined in subheading note (c) for zinc dust.
Zinc Dust for Chemical Precipitations
Ultra-fine zinc dust, condensed from vapor with spherical particles where 85% pass 63-micron mesh and containing 88% metallic zinc, used in chemical reactions for precipitating metals from solutions. Falls under 7903.10.00.00 per official definition distinguishing it from coarser powders.
Paint Grade Zinc Dust
Fine spherical zinc dust from zinc vapor condensation, 92% metallic zinc with 90% particles below 63 microns, essential for anti-corrosive primers and metallic paints. Precisely matches HTS 7903.10.00.00 zinc dust definition excluding alloys or coarser powders.
Electronics Sintering Zinc Dust
High-fineness zinc dust from vapor process, 86% metallic zinc with spherical particles averaging 10-20 microns (all passing 63-micron), used in electronics for sintering conductive pastes. Meets exact criteria of HTS 7903.10.00.00 subheading note (c) for zinc dust.
Anti-Corrosion Zinc Dust Primer Additive
Industrial zinc dust specifically for epoxy primers, condensed from vapor with 89% Zn content and 82% particles under 63 microns per sieve analysis. HTS 7903.10.00.00 applies as pure zinc dust per chapter definitions, prior to paint mixing.