2929.10.15.00 - Mixtures of 2,4- and 2,6-toluenediisocyanates

This HTS classification covers mixtures specifically composed of 2,4-toluenediisocyanate (2,4-TDI) and 2,6-toluenediisocyanate (2,6-TDI). These are organic chemical compounds characterized by the presence of two isocyanate functional groups (-N=C=O) attached to a toluene ring structure. Such mixtures are commonly used as key intermediates in the production of polyurethane foams, coatings, adhesives, and elastomers.

Distinction from sibling categories is crucial for accurate classification. Unlike HTS code 2929.10.10.00, which specifically covers *unmixed* toluenediisocyanates (meaning either pure 2,4-TDI or pure 2,6-TDI), this category exclusively applies to formulations containing both isomers in a blend. Other sibling categories, such as those covering bitolylene diisocyanate or various other specific isocyanates, represent entirely different chemical entities and are therefore classified separately.

As this HTS code represents a leaf node, there are no further subcategories. Therefore, classification under 2929.10.15.00 hinges on the confirmed presence of a mixture of 2,4- and 2,6-toluenediisocyanates, as opposed to a single isomer or a different type of diisocyanate compound. Importers should ensure that their documentation accurately reflects the composition of the imported product to comply with this specific classification.