2914.79.90.00 - Other

This HTS category, 2914.79.90.00, encompasses a diverse range of ketones and quinones, specifically their derivatives that have undergone halogenation, sulfonation, nitration, or nitrosation, and do not fall into any more specific subcategories. These are organic compounds characterized by the presence of a carbonyl group (C=O) within a carbon chain or ring, where the carbon atom of the carbonyl group is bonded to two other carbon atoms. The crucial defining feature of this "other" classification is the presence of at least one halogen atom (chlorine, bromine, iodine, fluorine), a sulfonic acid group (-SO3H), a nitro group (-NO2), or a nitroso group (-NO) attached to the parent ketone or quinone structure.

It is important to differentiate this broad residual category from its sibling, 2914.79.60.00, which specifically classifies 1-Chloro-5-hexanone. While both involve halogenated ketones, 2914.79.60.00 is reserved for that precise compound, whereas 2914.79.90.00 is for all other halogenated, sulfonated, nitrated, or nitrosated ketone and quinone derivatives not otherwise specified. This includes compounds with multiple types of functional groups or those with complex molecular structures that do not align with more narrowly defined classifications.

As a leaf node, this category has no further subcategories. Therefore, classification within 2914.79.90.00 is determined by the absence of a more specific HTS code. Importers and exporters should meticulously examine the chemical structure and properties of their goods to ensure they do not meet the criteria for any more detailed subheadings within Chapter 29, particularly those within heading 2914. Examples could include compounds such as dichlorinated acetophenones, nitrated camphor derivatives, or sulfonated cyclohexanones, provided they are not explicitly listed elsewhere.