9902.04.94 - Bitolylene diisocyanate (3,3'-dimethylbiphenyl-4,4'-diyl diisocyanate ) (CAS No. 91-97-4) (provided for in subheading 2929.10.20)

This HTS category, 9902.04.94, specifically covers Bitolylene diisocyanate (3,3'-dimethylbiphenyl-4,4'-diyl diisocyanate), also known by its CAS number 91-97-4. While the broader scope of Chapter 99 falls under temporary legislation and special classification provisions, this particular subheading acts as a temporary or specific classification for this chemical compound. It is important to note that this entry indicates that Bitolylene diisocyanate is "provided for in subheading 2929.10.20," suggesting that this 9900 series code likely reflects a temporary duty rate, quota, or other trade measure applied to this specific chemical.

As this is a leaf node within Chapter 99, there are no further subcategories. The distinction from sibling categories within Chapter 99 would depend on the specific temporary measures applied to other entries within this chapter. For classification purposes, the defining characteristic of this entry is the precise chemical identity of Bitolylene diisocyanate. Unlike general chemical classifications found in earlier chapters of the HTS, this entry is part of a special provision designed to manage the import of this particular substance, likely due to trade agreement considerations or other temporary import regulations.