2903.29.00.00/1,4-Dichloro-2-butene/Mexico

1,4-Dichloro-2-butene from Mexico

1,4-Dichloro-2-butene is a bifunctional unsaturated chlorinated compound used in pharmaceutical synthesis. Chemically defined under HTS 2903.29.00.00 with characteristic C=C and allylic chlorides. Intermediate for contrast agents and antivirals.

Duty Rate — Mexico → United States

15.5%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico

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Import Tips

• Specify cis/trans isomer ratio in commercial invoice for accurate statistical reporting

• Extremely toxic lachrymator; requires UN 2920 Corrosive/Acute Toxicity labeling

• Confirm no sulfonation that would shift to specific functional heading