9902.08.48 - Reactive Blue 19 (Disodium 1-amino-9,10-dioxo-4-[(3-{[2-(sulfonatooxy)ethyl] sulfonyl} phenyl) amino]-9,10-dihydro-2-anthracenesulfonate) (CAS No. 2580-78-1)(provided for in subheading 3204.16.20)

This HTS category, 9902.08.48, specifically covers Reactive Blue 19, identified by its chemical name and CAS number 2580-78-1. This substance is a particular synthetic organic dyestuff, designed for use in textile dyeing and printing applications, providing a vibrant blue coloration. Its classification is provided for under the broader subheading 3204.16.20, indicating its primary function as a dyestuff.

As a leaf node within Chapter 99, this entry signifies a specific temporary modification or provision related to import restrictions or trade agreements, rather than a standard product grouping. Unlike the numerous "sibling" categories beginning with "01", which deal with live animals, or other chapters encompassing manufactured goods or raw materials, this node represents a highly specialized entry under the "Special Classification Provisions." The "99" series of HTS codes are generally reserved for temporary tariff rates, quotas, or other specific trade measures that deviate from the permanent tariff structure.

Given that this is a leaf node, there are no further subcategories to introduce. The classification is definitive for Reactive Blue 19 under the stated temporary provision. Importers should note that while the underlying product might fall under a more general heading, the presence of this code indicates specific conditions or limitations currently in effect for its importation, likely due to trade policy or agreements.