7903.10.00.00 - Zinc dust

This HTS category, 7903.10.00.00, specifically covers "Zinc dust." Zinc dust refers to finely divided particles of zinc, often produced by atomization or grinding processes. It is characterized by its granular or powdery form, which distinguishes it from other forms of zinc. Its primary applications are in protective coatings, chemical processes, and as a pigment.

This classification is distinguished from its sibling category, 7903.90 ("Other"), which would encompass zinc in other forms such as powders and flakes that do not meet the specific definition of "dust." The critical differentiator lies in the particle size, morphology, and manufacturing process, which define what constitutes zinc "dust" as opposed to other finely divided zinc materials.

As this is a leaf node within the HTS structure, there are no further subcategories under 7903.10.00.00. Therefore, classification within this code relies solely on confirming that the imported product is indeed zinc in a finely divided, dusty form, as opposed to broader categories of zinc powders or flakes covered elsewhere.