Methyloxirane (Propylene Oxide) from China
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 — 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
• UN1280; tertiary butyl catechol inhibitor mandatory
• Epoxide oxygen equivalent weight certification
• Polyol production end-use common; pure monomer docs