9902.09.66 - Mixtures of 5,7-dichloro-4-(4-fluorophenoxy)quinoline (Quinoxyfen) (CAS No. 124495-18-7) and application adjuvants (provided for in subheading 3808.92.15)

This HTS classification, 9902.09.66, specifically covers mixtures containing the chemical compound Quinoxyfen (5,7-dichloro-4-(4-fluorophenoxy)quinoline, CAS No. 124495-18-7) alongside application adjuvants. These adjuvants are themselves classified under subheading 3808.92.15, which pertains to other preparations for the retail sale or as active ingredients of preparations for use in agriculture, horticulture, or for similar purposes, specifically for controlling fungi. The defining characteristic of this category is the combination of Quinoxyfen, a fungicide, with specific formulation agents that enhance its application or efficacy.

Unlike the broader, foundational categories of live animals or other chemical mixtures found at the same level, this HTS code is highly specialized. Its placement within Chapter 99 signifies a temporary tariff provision, often related to trade agreements, temporary legislation, or specific import restrictions. This distinguishes it from the permanent classifications found in Chapters 1 through 97, which describe goods based on their inherent nature and general use without such specific legislative or policy considerations.

As a leaf node, HTS 9902.09.66 does not have further subcategories. The classification is specific to these precise mixtures. Therefore, any variations in the composition, concentration of Quinoxyfen, or the nature of the accompanying adjuvants would necessitate a re-evaluation of the classification. The presence of Quinoxyfen, a known fungicidal active ingredient, and its intended use in agricultural or horticultural applications, along with the specific inclusion of application adjuvants, are the critical factors for classification under this provision.