9902.10.96 - Mixtures of 95 percent perfluoropolyether polyethoxy alcohol (CAS No. 1260733-08-1) and 5 percent 2,2'-[oxybis(2,1-ethanediyloxy)]diethanol (Tetraethylene glycol) (CAS No. 112-60-7) (provided for in subheading 3904.69.50)

This HTS category, 9902.10.96, specifically classifies mixtures containing 95 percent perfluoropolyether polyethoxy alcohol (CAS No. 1260733-08-1) and 5 percent 2,2'-[oxybis(2,1-ethanediyloxy)]diethanol (Tetraethylene glycol) (CAS No. 112-60-7). These mixtures are further referenced as being provided for under subheading 3904.69.50, indicating their foundational material classification. The inclusion of this code within Chapter 99 of the HTS signifies that these goods are subject to temporary legislation, temporary modifications proclaimed pursuant to trade agreements, or additional import restrictions.

Unlike the general provisions for live animals found in Chapters 01 and beyond, this category addresses highly specialized chemical mixtures. Its existence in Chapter 99 highlights its unique regulatory status, distinct from the permanent classifications of goods based on their inherent material or end-use found in earlier chapters. The specific percentages and chemical identities of the components are the defining criteria for classification under this code.

As this is a leaf node within the HTS, there are no further subcategories to introduce. Classification under 9902.10.96 is definitive once the precise composition of the mixture matches the description. Importers must verify that the imported product strictly adheres to the specified chemical components and percentages to ensure correct entry and compliance with the temporary measures associated with this provision.