3824.81.00.00 - Containing oxirane (ethylene oxide)

This HTS category, 3824.81.00.00, encompasses chemical products and preparations specifically characterized by the presence of oxirane, also known as ethylene oxide. This substance is a highly reactive epoxide widely used as a fumigant, sterilant, and as a chemical intermediate in the production of various industrial chemicals, including surfactants, glycol ethers, and polyethers. The classification is relevant for mixtures or preparations where oxirane is a constituent, regardless of its specific function or concentration, provided it does not fall under a more specific heading.

This particular subheading distinguishes itself from its siblings primarily by the specific chemical compound it identifies. For instance, sibling categories such as 3824.82.00.00 cover products containing polychlorinated biphenyls (PCBs) or related compounds, while 3824.83.00.00 specifically addresses the presence of tris(2,3-dibromopropyl) phosphate. The crucial differentiator for 3824.81.00.00 is the defining characteristic being the inclusion of oxirane.

As this is a leaf node within the HTS, there are no further subdivisions or subcategories. Therefore, classification under 3824.81.00.00 relies directly on the presence of oxirane as a component in the chemical product or preparation. Importers and exporters should carefully verify the composition of their goods to ensure accurate classification based on the identified presence of this specific chemical.