2620.60.90.00 - Other

This HTS category, 2620.60.90.00, encompasses a residual material derived from various industrial processes, specifically those that are not related to the manufacture of iron or steel. The defining characteristic of the materials within this group is their content of arsenic, mercury, thallium, or mixtures thereof. Furthermore, these residues must be of a type utilized for the extraction of arsenic or these specific metals, or for the subsequent manufacturing of their chemical compounds. This implies a functional classification based on the intended application of the residue.

This classification serves as a residual category for arsenic, mercury, or thallium-containing residues used in metal extraction or chemical compound manufacturing, distinguishing it from its sibling, 2620.60.10.00. The sibling category is specifically for residues *of a kind used only for the extraction of arsenic or the manufacture of its chemical compounds*. Therefore, 2620.60.90.00 covers broader applications beyond just arsenic, including those for mercury and thallium, as well as any residues containing these elements that are suitable for extraction or chemical compound production, but not exclusively for arsenic.

As this is a leaf node in the HTS classification system, there are no further subcategories. The classification is definitive at this level, encompassing all qualifying residues not specifically captured by more narrowly defined sibling categories. Practical classification within this code will rely on verifying the presence of arsenic, mercury, or thallium, and confirming the intended industrial use of the residue for the extraction of these specific metals or the production of their chemical compounds.