2805.19.20.00 - Barium

This HTS category, 2805.19.20.00, specifically covers barium. Barium is an alkaline-earth metal that falls under the broader classification of "Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury." This section of the Harmonized Tariff Schedule deals with fundamental inorganic chemical elements.

Within the "Other" subgroup of alkali or alkaline-earth metals, barium is distinguished from its sibling category, 2805.19.10.00, which exclusively classifies strontium. While both are alkaline-earth metals, barium possesses distinct chemical and physical properties, leading to its separate classification. This precise differentiation is crucial for accurate tariff application and compliance.

As this is a leaf node in the HTS structure, there are no further subcategories for barium. Therefore, the classification of barium at this level is definitive and does not break down into more granular classifications. Import and export activities involving pure barium or its primary metallic forms would be classified under this specific code.