Isobutene (2-Methylpropene) from Canada
Isobutene, or 2-methylpropene (CH2=C(CH3)2), is a branched butene isomer classified under HTS 2901.23.00.00 as an acyclic unsaturated hydrocarbon. Primary use is in manufacturing methyl tert-butyl ether (MTBE) and polyisobutylene.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include polymerization inhibitor specification to maintain classification as pure compound
• Comply with EPA VOC emission regulations for import documentation
• Separate from butadiene mixtures to avoid 2901.29 classification