9902.03.06 - 3-Hydroxy-2,2-dimethylpropyl-3-hydroxy-2,2-dimethylpropionate (CAS No. 1115-20-4) (provided for in subheading 2918.19.90)

This HTS classification, 9902.03.06, specifically covers the chemical compound 3-Hydroxy-2,2-dimethylpropyl-3-hydroxy-2,2-dimethylpropionate, also identified by CAS Number 1115-20-4. Its inclusion within Chapter 99 signifies that it falls under temporary legislation, special classification provisions, or temporary modifications proclaimed pursuant to trade agreements or specific legislation like Section 22 of the Agricultural Adjustment Act. This specialized treatment suggests that the standard classification for this chemical might be found elsewhere in the HTS, likely in Chapter 29 (Organic Chemicals), as indicated by its reference to subheading 2918.19.90.

The distinction of this code from other sibling categories within Chapter 99 is its precise identification of a single chemical substance with a defined CAS number and chemical name. While other codes in Chapter 99 might represent broader categories of goods subject to temporary restrictions or special tariff treatment, 9902.03.06 is exceptionally granular, targeting a specific organic ester. This specificity is crucial for accurate customs declaration and the application of any pertinent temporary measures.

As this node is a leaf node, there are no further subcategories. Therefore, the focus remains on the specific chemical entity and its unique tariff treatment under this temporary provision. Importers and customs brokers must ensure that this chemical is correctly identified and that all relevant declarations and documentation for this specific HTS code are meticulously prepared to comply with the underlying legislation and any associated duties or restrictions.