2918.99.20 - Other

This HTS classification, 2918.99.20, encompasses "Other" carboxylic acids with additional oxygen function and their derivatives, which are aromatic in nature and not specifically classified as pesticides under sibling categories. These compounds are characterized by a carboxylic acid group attached to an aromatic ring, along with at least one other oxygen-containing functional group. The "Other" designation signifies that the specific chemical structure or intended use does not align with more precisely defined subheadings at this level, including those listed under 2918.99.18.00 which specifically name certain phenoxybutyric and phenoxyacetic acid derivatives.

The scope of this category is therefore broad, covering a range of aromatic carboxylic acids with additional oxygen functions that do not fall into more granular pesticide classifications. Importers and exporters should carefully review the chemical structure and intended application to ensure correct classification, particularly when dealing with compounds that might share similarities with listed siblings but possess distinct chemical properties or primary uses beyond direct pesticidal application.

Further breakdown within this code, specifically 2918.99.20.10, 2918.99.20.15, and 2918.99.20.50, allows for more precise classification of specific compounds. These subcategories differentiate based on the precise chemical identity of the aromatic carboxylic acid derivative, such as 2,4-Dichlorophenoxyacetic acid (and its salts and esters), 2-Methyl-4-chlorophenoxyacetic acid, and a general "Other" category for remaining compounds that meet the parent criteria. This hierarchical structure aids in accurately capturing the vast array of organic chemical compounds within the HTS system.