Isoindole-1,3-dione from Germany
Isoindole-1,3-dione, a structural isomer of phthalimide, is an aromatic fused-ring lactam with nitrogen hetero-atom. It is imported under HTS 2933.79.1500 as other aromatic lactams for use in resins and dyes. Classification follows Chapter 29's rule for last-in-order heterocyclic nitrogen compounds.
Duty Rate — Germany → United States
6.5%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Cross-reference with phthalimide rulings for consistency; declare exact isomer to avoid generic amide classification