9902.04.06 - 3,4-Diaminobenzoic acid (CAS No. 619-05-6) (provided for in subheading 2922.49.30)

This HTS code, 9902.04.06, specifically designates 3,4-Diaminobenzoic acid (CAS No. 619-05-6) for special classification purposes. It is important to note that this entry is provided for in subheading 2922.49.30, indicating that its primary classification resides within the organic chemicals chapter, but this 9900 series code imposes a temporary or specific trade regulation. Therefore, goods falling under this code are subject to the provisions outlined in Chapter 99 of the Harmonized Tariff Schedule, which pertains to temporary legislation, modifications proclaimed under trade agreements, and additional import restrictions.

As a leaf node within Chapter 99, this entry does not have further subcategories. Its distinction from other sibling categories at this level lies in its precise identification of a single chemical compound, 3,4-Diaminobenzoic acid, and its association with specific temporary or additional import rules. Unlike the broader agricultural or manufactured goods categories that might exist elsewhere in the HTS, this code addresses a very specific organic chemical with defined CAS registry information, emphasizing a particular regulatory treatment rather than a general product group.

The classification under 9902.04.06 signifies that while the chemical itself is a distinct substance with established properties, its importation may be subject to specific quotas, duties, or other restrictions as determined by trade agreements or other legislative actions that fall under the scope of Section XXII. Importers must be aware that this entry acts as an overlay to its primary tariff classification, requiring adherence to both the general chemical classification and any stipulated special provisions.