Lactam (Beta-Propiolactam) from China
Beta-propiolactam is a strained four-membered ring acyclic lactam amide used in polymer production like nylon precursors. Despite ring structure, classifies as acyclic amide derivative under HTS 2924.19.11. Chemically defined per chapter notes excluding certain heterocycles.
Duty Rate — China → United States
41.2%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Handle as CMR substance with UN 3386 labeling; obtain prior EPA approval for TSCA import; test for ring-opening impurities affecting purity classification