7903.90.30.00 - Powders

This HTS code, 7903.90.30.00, specifically classifies zinc in the form of powders. This category encompasses finely divided zinc particles, typically produced through processes like atomization or milling. These powders are distinct from other forms of zinc covered under Chapter 79, such as unwrought zinc or zinc bars, plates, and shapes. The defining characteristic for classification under this code is the physical form of the zinc as a powder, regardless of its specific application, which could range from pigments and coatings to components in chemical processes.

When classifying zinc products, it is crucial to differentiate between various forms. While this category is for zinc powders, its sibling category, 7903.90.60.00, covers "Other" forms of zinc that do not fall under the specific definitions of dust, powders, or flakes. Therefore, if the zinc material is not a powder but rather a more consolidated form or a different presentation not explicitly defined, it would likely be directed to the "Other" category. The distinction hinges on the physical particulate state of the zinc.

As 7903.90.30.00 represents a leaf node in the HTS classification system, there are no further subcategories for this specific code. All forms of zinc that meet the description of "powders" will be classified here. Practical classification often involves examining the mesh size or particle distribution to confirm that the material indeed constitutes a powder as understood in trade and industrial contexts, distinguishing it from coarser zinc dust or flake forms.