3802 - Activated carbon; activated natural mineral products; animal black, including spent animal black:

HTS code 3802 encompasses activated carbon, activated natural mineral products, and animal black, including spent animal black. These products are characterized by their high surface area and porous structure, making them effective adsorbents for purification and filtration processes. Activated carbon, derived from organic materials like coal, wood, or coconut shells, is widely used for decolorizing liquids, removing odors, and purifying gases. Activated natural mineral products refer to mineral substances, such as clays or zeolites, that have undergone activation to enhance their adsorptive properties. Animal black is a carbonaceous material produced from charred animal bones, historically used for decolorizing sugar.

This category is distinct from other Chapter 38 headings which cover a broader range of miscellaneous chemical products. Unlike raw materials or finished chemical preparations with different applications, goods classified under 3802 are specifically valued for their adsorptive capabilities. For instance, it does not include non-activated mineral earths (Chapter 25) or finished filtering or purifying apparatus (Chapter 84).

Within HTS code 3802, further subdivisions exist to differentiate between activated carbon and other activated products. Subheading 3802.10 specifically covers activated carbon, recognizing its dominant role and distinct production methods. The residual category, 3802.90, is designated for "Other," encompassing activated natural mineral products and animal black, thus maintaining a clear distinction based on the primary activated material.