9902.02.81 - t-Butyl acrylate (2-methyl-2-propanyl acrylate) (CAS No. 1663-39-4) (provided for in subheading 2916.12.50)

This HTS category, 9902.02.81, specifically covers t-Butyl acrylate (2-methyl-2-propanyl acrylate), identified by CAS No. 1663-39-4. This substance is classified under this temporary legislation provision because it is also provided for in subheading 2916.12.50, which pertains to unsaturated esters of acrylic acid. The inclusion under Chapter 99 signifies that this classification is subject to temporary modifications or restrictions, often enacted under trade agreements or specific agricultural legislation such as Section 22 of the Agricultural Adjustment Act.

Given that this is a leaf node, there are no further subcategories within 9902.02.81. Its distinction from sibling categories at the same level within Chapter 99 lies in its specific identification of t-Butyl acrylate. Other categories within Chapter 99 would address different temporary import restrictions or modifications applicable to other goods, potentially including other chemical compounds, agricultural products, or specific manufactured items, each with its own unique HTS code and corresponding regulatory context. This particular code serves as a specialized entry for a chemical intermediate with a defined use.