2820 - Manganese oxides:

This category, HTS Code 2820, encompasses various manganese oxides. These inorganic chemical compounds are characterized by the presence of manganese and oxygen in different stoichiometric ratios. They find application in a range of industrial processes, including battery manufacturing, pigment production, and as oxidizing agents. The classification is limited to manganese oxides themselves, distinguishing them from other manganese compounds or finished products that may incorporate manganese oxides.

As a subcategory within Chapter 28 (Inorganic Chemicals), HTS 2820 is distinct from sibling categories that cover live animals (Chapters 01), vegetable products (Chapters 06-14), or other inorganic substances outside of the manganese oxide family. Its focus is specifically on the chemical compounds of manganese and oxygen, rather than raw ores, metals, or alloys.

The subcategories within 2820 further refine the classification based on the specific type of manganese oxide. HTS 2820.10.00.00 covers manganese dioxide, a common and widely used form of manganese oxide. HTS 2820.90.00.00 is designated for "Other" manganese oxides, which would include less common or other stoichiometric combinations of manganese and oxygen not specifically listed. This differentiation allows for precise tariff application based on the precise chemical composition of the imported or exported material.