2830.10.00.00 - Sodium sulfides

This HTS category, 2830.10.00.00, specifically covers sodium sulfides. These are inorganic chemical compounds characterized by the presence of sodium cations and sulfide anions. This classification is relevant for various forms of sodium sulfide, including both anhydrous and hydrated forms, as well as technical and purified grades. The principal use of these substances is often in industries such as leather tanning, dyeing, and mineral processing.

Within the broader heading of "Sulfides; polysulfides, whether or not chemically defined," this sub-heading distinguishes itself by its specificity to sodium-based compounds. Its sibling category, 2830.90 ("Other"), would encompass all other metallic and non-metallic sulfides and polysulfides not explicitly listed elsewhere under 2830, such as those of potassium, calcium, or silicon.

As this is a leaf node within the HTS structure, there are no further subcategories for 2830.10.00.00. Therefore, classification under this code requires confirming that the imported or exported material is indeed a sulfide of sodium, and not a polysulfide or a sulfide of any other element. The chemical composition and the presence of sodium as the cation are the primary determinants for classification under this specific HTS code.