9902.10.57 - Mixtures of C5-C18 perfluorocarbon alkanes, perfluorocarbon amines, and/or perfluorocarbon ethers (CAS No. 86508-42-1) (provided for in subheading 3824.99.92)

This HTS category, 9902.10.57, specifically classifies mixtures comprised of perfluorocarbon alkanes, perfluorocarbon amines, and/or perfluorocarbon ethers. These substances are characterized by the presence of fluorine atoms bonded to carbon atoms within their molecular structure. The CAS number 86508-42-1 serves as a key identifier for these specific chemical compositions. It is important to note that while these are chemical mixtures, their classification within Chapter 99 signifies they are subject to special provisions, often related to temporary legislation or trade agreements, and are also provided for under subheading 3824.99.92 of the standard HTS.

Distinguishing this category from its many sibling entries within the HTS Root requires understanding the fundamental principles of the Harmonized System. The sibling categories, such as those covering live animals (Chapters 01), are entirely distinct in their subject matter, focusing on biological organisms rather than manufactured or processed chemical substances. Category 9902.10.57 is situated within Section XXII, a section dedicated to specialized and often temporary tariff treatments, differentiating it from the broader chapters that cover standard commercial goods based on their material composition or end-use.

As this is a leaf node within the HTS, there are no subcategories to introduce. Classification at this level relies on accurately identifying the presence of the perfluorocarbon alkanes, amines, and/or ethers described, and ensuring the goods meet the criteria for temporary or special provisions as indicated by its Chapter 99 placement. Documentation confirming the composition and the application of any relevant trade agreements or temporary legislation will be crucial for customs clearance.