cis-2-Butene
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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If mixed with other hydrocarbons exceeding purity thresholds
Impure mixtures become prepared chemical preparations outside pure compound scope.
If classified as ethylene-propylene mixture by trade practice
Certain unsaturated C3-C4 mixtures may fall under propylene subheading.
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Import Tips & Compliance
• 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
Related Products under HTS 2901.23.00.00
1-Butene (But-1-ene)
1-Butene is a colorless, flammable acyclic unsaturated hydrocarbon with the formula CH2=CH-CH2-CH3, classified under HTS 2901.23.00.00 as a pure isomer of butene. It serves as a key monomer in producing linear low-density polyethylene (LLDPE) and other polymers.
trans-2-Butene
trans-2-Butene, the trans stereoisomer of 2-butene (CH3-CH=CH-CH3), is a separate chemically defined compound under HTS 2901.23.00.00. Commonly used in petrochemical research and isomerization studies.
Isobutene (2-Methylpropene)
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.
1,3-Butadiene (refined isomer)
While primarily under 2901.24, highly purified 1,3-butadiene can be considered a butene-related diene isomer under HTS 2901.23.00.00 when specified as such. Used exclusively for synthetic rubber (SBR) production.
2-Butene Industrial Grade
Industrial 2-butene (mixed cis/trans isomers) is a chemically defined butene mixture under HTS 2901.23.00.00, used in solvent production and alkylation processes.
Butene-1 Polymerization Grade
High-purity butene-1 (>99.5%) specifically for LLDPE copolymer production, classified as pure butene isomer under HTS 2901.23.00.00.