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Section VI — Products of the chemical or allied industries

HS code

29012300

Butene (butylene) and isomers thereof, unsaturated

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Common commodities
Chemically pure 1-ButenePure unsaturated C4 (But-1-ene)Isobutylene - chemically pureTrans-2-Butene - chemical purity gradeC4H8 But-2-ene (cis or trans) - high purityChemical purity butene isomers mixHigh purity Isobutylene for polymerizationPure C4 unsaturated hydrocarbon (butene isomer)Trans-1,3-Butadiene (excluded due to double bond in different position)Chemically pure butane (excluded as it's saturated)