Lactam (Beta-Propiolactam) from United States
Beta-propiolactam is a strained four-membered ring lactam amide used as a monomer in polymer production, including nylon precursors. Despite its ring structure, it is classified as an acyclic amide derivative under this tariff item because the ring is not a heterocyclic ring for classification purposes. It is a separate chemically defined organic compound, meeting the criteria of Chapter 29 Note 1(a).
Duty Rate — United States → Canada
0%
Import Tips
• Ensure the beta-propiolactam is a separate chemically defined compound with no added substances beyond permitted stabilizers
• Declare the CAS number and purity on the commercial invoice to support classification
• Verify if the product requires a permit under the Controlled Drugs and Substances Act, as some lactams are monitored