Isobutylene Gas from Canada
Isobutylene, a branched C4 olefin gas used in synthetic rubber production, supplied in gaseous state. HTS 2711.29.00 applies as 'other' gaseous hydrocarbons, excluding linear butylene but capturing branched variants not specifically named. Derived from petroleum cracking.
Duty Rate — Canada → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Lab certification required to confirm isobutylene >50% and gaseous form
• Avoid confusion with polymer-grade liquids
• Use cryogenic gaseous shipping to maintain state