9902.11.16 - Mixtures of ethanaminium, 2-hydroxy-N-(2-hydroxyethyl)-N,N-dimethyl-, methyl sulfate (1:1), polymer with 2-(chloromethyl)oxirane, 1,3-diisocyanatomethylbenzene, a-hydro-w-hydroxypoly[oxy(methyl-1,2-ethanediyl)] and 1,2,3-propanetriol (CAS No. 82294-81-3); Phenol, 4,4'-(1-methylethylidene)bis-, polymer with 2-(chloromethyl)oxirane (CAS No. 25068-38-6); and Formamide, N,N-dimethyl-(CAS No. 68-12-2) (provided for in subheading 3907.30.00)

This classification, HTS Code 9902.11.16, pertains to specific chemical mixtures designated for temporary modification under trade agreements or other import restrictions. These mixtures are comprised of several distinct chemical compounds, including ethanaminium derivatives, phenol-based polymers, and formamide derivatives, which are themselves related to Chapter 39 products (plastics and articles thereof). The precise composition, as indicated by the CAS numbers, is crucial for determining eligibility under this temporary provision.

Unlike the broader categories of raw materials or general chemicals found in earlier chapters of the HTS, this code does not cover standalone chemicals but rather specific, complex formulations. Its placement within Section XXII, which deals with special classification provisions and temporary legislation, signifies that these goods are subject to unique import rules beyond standard tariff classifications. Therefore, this code is distinct from general chemical classifications and is reserved for goods meeting very specific, temporary import requirements, often linked to trade policy or agricultural legislation.

As a leaf node, HTS Code 9902.11.16 does not have further subdivisions. Classification under this code hinges on the exact chemical composition and the presence of all specified components as outlined in the description. Importers must verify that the goods precisely match the chemical identity and structure of the mixture defined, as well as confirm their eligibility under the prevailing temporary legislation.