9902.10.73 - Oligomeric poly(butadiene) (CAS No. 68441-52-1) (provided for in subheading 3902.90.00)

HTS code 9902.10.73 specifically covers Oligomeric poly(butadiene), identified by CAS No. 68441-52-1. This classification is nested within Chapter 99, which pertains to temporary legislation and modifications, often related to trade agreements or specific import restrictions under Section 22 of the Agricultural Adjustment Act. Therefore, imports under this code are subject to these specific, time-limited provisions rather than the general tariff structure.

This particular classification is distinct from the broader material categories found in other HTS chapters. While it is related to polymers, its placement in Chapter 99 signifies a temporary or exceptional treatment, distinguishing it from permanent classifications for plastics and other polymers found in Chapter 39, where oligomeric poly(butadiene) might otherwise be provisionally placed (as indicated by its reference to subheading 3902.90.00). The focus here is on the regulatory status and temporary nature of its import, rather than its fundamental material properties.

As a leaf node, HTS code 9902.10.73 does not have further subcategories. The classification is precise, and any goods falling under this designation will be directly subject to the temporary measures applicable to Oligomeric poly(butadiene) as outlined in Chapter 99. Importers should therefore pay close attention to the specific proclamations and restrictions associated with this temporary code to ensure compliance.