2901.23.00.00/1-Butene (But-1-ene)/Japan

1-Butene (But-1-ene) from Japan

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.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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Import Tips

• Verify purity levels (>99%) via certificate of analysis to confirm classification as chemically defined compound

• Include Material Safety Data Sheets (MSDS) documenting flammability and handling requirements for customs clearance

• Avoid misclassification as mixtures by ensuring single-isomer specification in import documentation