Butylene Oxide with Stabilizer from Mexico
Stabilized butylene oxide contains added preservatives necessary for transport while maintaining its identity as a chemically defined three-membered ring epoxide under HTS 2910.90.10.00 per chapter note (f). Used in polymer initiator production.
Duty Rate — Mexico → United States
14.6%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Document stabilizer as 'necessary for preservation/transport' per note (f) with <1% concentration to maintain pure compound status
• Conduct stability testing if challenged by customs on whether additions render it suitable for specific use
• Use stainless steel drums compatible with epoxide reactivity to prevent polymerization during transit