Gamma-Butyrolactone (GBL) from China
Gamma-Butyrolactone (GBL) is a cyclic lactone, a five-membered heterocyclic ring compound containing one oxygen hetero-atom, classified under HTS 2932.20.50.10 as 'Butyrolactone'. It serves as a chemical intermediate in pharmaceutical and polymer production.
Duty Rate — China → United States
16.2%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Verify purity certificates to confirm it meets Chapter 29 criteria for chemically defined organic compounds; ensure DEA precursor chemical registration if applicable; avoid retail packaging that could shift classification to Chapter 38