cis-2-Butene from Mexico
cis-2-Butene is the cis isomer of 2-butene, an acyclic alkene with formula CH3-CH=CH-CH3, falling under HTS 2901.23.00.00 for butene isomers. It is used in organic synthesis and as a research chemical.
Duty Rate — Mexico → United States
10%
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
• Specify stereochemistry (cis) in technical documentation to distinguish from trans isomer
• Ensure DOT-compliant packaging for flammable liquids during transport and customs inspection
• Check for stabilizer additives that could reclassify as Chapter 29 note (f) product