Methyloxirane (Propylene Oxide) from Mexico
Propylene oxide is three-membered epoxide with methyl substitution and oxygen hetero-atom, epoxidation agent. Classified 2932.99.90 despite general epoxide exclusion due to substitution. Industrial chemical staple.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• UN1280; tertiary butyl catechol inhibitor mandatory
• Epoxide oxygen equivalent weight certification
• Polyol production end-use common; pure monomer docs