HS Code for Zinc powder

Zinc powders and flakes are classified under HS code 7903.90. This classification is found within Chapter 79, which covers zinc and its derivatives. The Harmonized System distinguishes between zinc dust (7903.10) and zinc powders/flakes (7903.90). Powders are generally defined as particles obtained by atomization or mechanical grinding, while flakes are characterized by a high surface-area-to-thickness ratio, often produced by ball-milling. The classification depends on the particle size and the physical structure of the material. Unlike zinc ores, these are metallic products. They are used extensively in the manufacture of protective coatings, chemical reagents, and in powder metallurgy. The distinction between dust and powder is often based on the production method and the particle size distribution, with dust typically being finer and often a byproduct of distillation.

Products Included

• Atomized zinc powder
• Zinc flakes for anti-corrosive paints
• Zinc powder for chemical reduction
• Zinc powder for metallurgical applications
• Zinc flakes used in mechanical plating

Common Misclassification

The most frequent misclassification occurs between zinc powder (7903.90) and zinc dust (7903.10). Zinc dust is specifically defined in the HS Explanatory Notes as a very fine powder obtained by the condensation of zinc vapor. Another error is classifying zinc powder as a pigment under 3212.90 if it is dispersed in a non-aqueous medium. Furthermore, zinc oxide (2817.00) is sometimes mistaken for zinc powder due to its similar appearance, though it is a chemical compound rather than a metal.

FAQ

What is the HS code for zinc powder?

The HS code for zinc powders and flakes is 7903.90.

How is zinc powder different from zinc dust in the HS system?

Zinc dust (7903.10) is typically a fine powder obtained by condensation, whereas zinc powder (7903.90) includes atomized or mechanically produced particles and flakes.