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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If when mixed into conductive pastes or inks
Zinc dust in electronic pastes classifies as electrical machinery materials under Chapter 85.
If for jewelry alloy sintering
If destined for precious metal alloys, may fall under Chapter 71 as base metal powders for jewelry.
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Import Tips & Compliance
• Supply SEM images or laser diffraction reports proving spherical morphology and size distribution
• Declare as 'non-pyrophoric' if passivated; active dust requires special UN3077 handling
• For high-tech imports, reference BIS export controls if dual-use concerns arise
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.
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.
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.