9902.01.63 - Sodium Ferrocyanide (CAS No. 13601-19-9) (provided for in subheading 2837.20.51)

This HTS category, 9902.01.63, specifically addresses Sodium Ferrocyanide (CAS No. 13601-19-9). It is important to note that this classification falls under Section XXII of the Harmonized Tariff Schedule, which pertains to Special Classification Provisions, Temporary Legislation, and specific import restrictions. The inclusion of "provided for in subheading 2837.20.51" signifies that while this item is subject to temporary measures under Chapter 99, its fundamental classification as a ferrocyanide compound would otherwise be found in Chapter 28. This temporary provision likely imposes specific duties or quantitative restrictions on the importation of Sodium Ferrocyanide.

Unlike the vast majority of sibling categories within the HTS, which primarily deal with the classification of tangible goods ranging from live animals to manufactured products, this node is a temporary measure. Its existence signals a deviation from standard tariff treatment, often implemented due to trade policy, national security concerns, or other specific legislative directives. Therefore, its distinction from sibling categories lies not in the nature of the goods themselves, but in the unique legal and economic framework under which it is managed for import purposes.

As this node is a leaf node within Chapter 99, there are no further subcategories. Classification decisions within this specific provision are based on the precise identification of Sodium Ferrocyanide and adherence to the temporary legislation it falls under. Importers must be aware of the specific requirements, quotas, or duties associated with HTS 9902.01.63, which may supersede the standard treatment found in the base tariff schedule.