9902.11.34 - Mixtures containing 40 to 60 percent by weight formaldehyde polymers with aniline (CAS No. 25214-70-4) and 60 to 40 percent by weight 4,4'-methylendianiline (CAS No. 101-77-9) (provided for in subheading 3909.39.00)

This HTS category, 9902.11.34, specifically classifies mixtures comprised of precise weight proportions of formaldehyde polymers with aniline (CAS No. 25214-70-4) and 4,4'-methylendianiline (CAS No. 101-77-9). These materials are imported under temporary legislation or specific trade agreement provisions, as indicated by their placement within Chapter 99 of the HTS. The defining characteristic for classification under this code is the quantitative composition: a blend containing 40% to 60% by weight of formaldehyde polymers with aniline and a corresponding 60% to 40% by weight of 4,4'-methylendianiline.

Unlike the primary goods listed in earlier chapters of the HTS, such as live animals (Chapters 01), this category does not pertain to agricultural products or raw materials but rather to specialized chemical mixtures subject to unique trade regulations. Its existence within Chapter 99 signifies that these specific mixtures are subject to temporary measures, potentially for reasons related to trade agreements, national security, or economic policy, and are therefore distinct from their permanent classification under Chapter 39 (Plastics and articles thereof), specifically subheading 3909.39.00, for regular customs purposes.

As a leaf node, HTS code 9902.11.34 has no further subcategories. Classification under this provision is therefore dependent solely on meeting the exact compositional requirements outlined in its description. Importers must ensure that their product documentation accurately reflects the weight percentages of both specified components to properly utilize this temporary tariff provision.