9902.01.75 - Yttrium oxides having a purity of at least 99.9 percent (CAS No. 1314-36-9) (provided for in subheading 2846.90.80)

This HTS category, 9902.01.75, specifically covers yttrium oxides that meet a stringent purity requirement of at least 99.9 percent. These materials are identified by CAS Number 1314-36-9 and are provided for in subheading 2846.90.80, indicating their fundamental classification within the main HTS structure. The inclusion under Chapter 99 signifies that these yttrium oxides are subject to temporary legislation, modifications, or additional import restrictions, often enacted through trade agreements or specific agricultural adjustments.

As a leaf node within the HTS database, this category does not have further subdivisions. Its purpose is to isolate a very specific type of yttrium oxide for the application of unique tariff or regulatory measures distinct from other potential classifications of yttrium compounds or less pure oxides. The precise purity threshold is the key defining characteristic for goods falling under this provision.