9902.10.24 - Mixtures containing poly(ethylene-co-ethenyl acetate) of a kind used as fuel additives (CAS No. 24937-78-8) (provided for in subheading 3811.90.00)

This HTS classification covers specific mixtures containing poly(ethylene-co-ethenyl acetate) identified by CAS No. 24937-78-8. The defining characteristic of these mixtures is their intended use as fuel additives. Therefore, when classifying such products, the primary consideration is their functional application in enhancing fuel performance or properties. These particular mixtures are classified under Chapter 99 as a temporary legislative measure or modification, with their base classification indicated as subheading 3811.90.00, which pertains to other anti-knock preparations, antioxidants, de-icers, and similar preparations for use with fuels.

Distinguishing this category from its siblings at the HTS Database Root level requires an understanding of the fundamental differences in scope. The vast array of sibling categories, such as live animals (Chapters 01), are entirely distinct in product type, material, and intended use. This specific classification under 9902.10.24 is highly specialized, focusing on a chemical mixture with a defined application, whereas the broader HTS structure covers a much wider spectrum of goods across numerous chapters. Its placement within Section XXII further emphasizes its unique status as a provision subject to temporary legislation or trade agreement modifications, setting it apart from permanent tariff classifications.

As this HTS code represents a leaf node, there are no further subcategories. The classification is precise, with the description and provided CAS number serving as the definitive criteria for inclusion. Any product meeting the description of a mixture containing poly(ethylene-co-ethenyl acetate) intended for use as a fuel additive, and for which CAS No. 24937-78-8 is applicable, would fall under this specific provision. The intent is to capture these specific chemical formulations for specialized purposes, under the framework of temporary trade legislation.