2844.44.00.00 - Radioactive residues

This HTS category, 2844.44.00.00, specifically covers radioactive residues. These are materials that contain residual amounts of radioactive elements or isotopes, which may be the result of industrial processes, nuclear fuel cycles, or other activities involving radioactive substances. Importantly, this classification is for the *residues themselves*, meaning the waste or byproducts containing these radioactive materials, rather than pure radioactive elements, isotopes, or their concentrated compounds.

To distinguish this category from its siblings, it's crucial to understand the focus. Subheading 2844.41.00.00 deals with tritium and its compounds, while 2844.42.00.00 enumerates a specific list of highly radioactive isotopes like actinium-225 and californium-253, along with alloys, dispersions, and mixtures containing them. Subheading 2844.43.00 covers other radioactive elements, isotopes, compounds, and their associated alloys, dispersions, ceramic products, and mixtures. In contrast, 2844.44.00.00 is specifically for the *residue* or waste form where these radioactive materials are present in less concentrated or less defined states, often requiring specialized handling and disposal procedures.

As a leaf node, 2844.44.00.00 does not have subcategories. Therefore, classification under this code hinges on identifying the material as a residue containing radioactive elements or isotopes, and ensuring it does not fall under the more specific enumerations of other subheadings within the 2844.40 range that focus on specific isotopes or defined chemical compounds and mixtures. The key distinguishing factor is the "residue" designation, implying a waste or byproduct material.