2929.90 - Other:

This category, HTS Code 2929.90, encompasses organic compounds that possess a nitrogen function, excluding those specifically classified elsewhere within Chapter 29. It serves as a residual category for a diverse array of nitrogen-containing organic substances that do not fit into more specific classifications based on the type of nitrogen-containing functional group. The scope is broad, covering compounds where the nitrogen atom is bound to carbon, hydrogen, or other atoms in various configurations, resulting in a wide range of chemical properties and applications.

Distinguishing this category from its sibling, 2929.10 (Isocyanates), is crucial. While both deal with nitrogen-containing organic compounds, 2929.10 is exclusively for isocyanates, characterized by the -N=C=O functional group. HTS Code 2929.90, conversely, is for all other organic compounds with a nitrogen function that are not isocyanates. This includes, but is not limited to, compounds with amine, amide, nitrile, nitro, nitroso, oxime, and azido groups, provided they are not otherwise more specifically classified.

Within HTS Code 2929.90, a further subdivision exists under 2929.90.05.00. This subcategory specifically lists several complex organic compounds containing cyanate functional groups, such as 2,2'-Bis(4-cyanatophenyl)-1,1,1,3,3,3-hexafluoropropane and its related analogues. The existence of this specific subcategory highlights the HTS system's granular approach, distinguishing these particular cyanate-containing compounds due to their specific chemical structures and potential distinct trade flows, from the broader residual "Other" classification within 2929.90.