Methylethylketone Peroxide Stabilized with Hydroxypropyl Methacrylate from China
This is a hydantoin-structured curing agent used in polymer composites and gelcoat resins, stabilized for safe transport. Classified under HTS 2933.21.00.00 due to its hydantoin core meeting the unfused imidazole ring definition in Chapter 29 notes. The stabilizer qualifies under note (f) for preservation.
Duty Rate — China → United States
44%
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
• Include Material Safety Data Sheet (MSDS) and UN hazardous classification for peroxide shipments,Verify hydantoin structure documentation to prevent reclassification as organic peroxide (2909),Ensure stabilizer meets Chapter 29 note (f) criteria - necessary for transport only