2929.10.20.00 - Bitolylene diisocyanate (TODI);o-Isocyanic acid, o-tolyl ester; and Xylene diisocyanate

This HTS category encompasses specific isocyanates, namely Bitolylene diisocyanate (TODI), o-Isocyanic acid, o-tolyl ester, and Xylene diisocyanate. These compounds are characterized by the presence of isocyanate functional groups (-N=C=O) attached to aromatic ring structures. Their classification here signifies a distinction from other isocyanates, particularly those derived from toluene or other aliphatic and alicyclic structures.

It is crucial to differentiate this category from its siblings. For instance, 2929.10.10.00 and 2929.10.15.00 specifically address unmixed and mixed toluenediisocyanates, respectively, highlighting a focus on the positional isomers and combinations of TDI. Similarly, 2929.10.27.00 and 2929.10.35.00 enumerate a distinct set of isocyanates with varying structural features, such as N-butyl, cyclohexyl, or hexamethylene backbones, or more complex aromatic structures like naphthalene. The inclusion of TODI and Xylene diisocyanate in this specific code emphasizes their unique chemical structures and potentially different end-use applications compared to the listed sibling categories.

As this HTS code is a leaf node, there are no further subcategories. Therefore, classification decisions within this node will rely on precisely identifying the imported product as one of the enumerated substances: Bitolylene diisocyanate (TODI), o-Isocyanic acid, o-tolyl ester, or Xylene diisocyanate, and ensuring it does not fall under the scope of the more broadly defined or specifically enumerated sibling categories. The precise chemical identity and purity will be key factors in accurate classification.