Liquefied Isobutylene (2-Methylpropene) from Canada
Liquefied isobutylene, also known as 2-methylpropene, is a branched C4 olefin gaseous hydrocarbon liquefied under pressure, falling under HTS 2711.14.00.30 as butylene. It serves as a key intermediate in producing methacrylic acid, butyl rubber, and fuels.
Duty Rate — Canada → United States
0%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Provide gas chromatography (GC) analysis confirming isobutylene as principal isomer for accurate classification
• Use UN-approved cryogenic pressure vessels; declare exact pressure/temperature conditions on shipping documents
• Check for anti-dumping duties on C4 olefins from specific origins and maintain supply chain records