2931.90.90.30/Dichloro(2-chloroethenyl)arsine/Mexico

Dichloro(2-chloroethenyl)arsine from Mexico

Dichloro(2-chloroethenyl)arsine, synonymous with 2-Chlorovinyldichloroarsine, is a specific organoarsenic vesicant classified precisely under HTS 2931.90.90.30. Its structure confirms direct arsenic-carbon bonding, excluding it from sulfonated/halogenated derivatives in notes.

Duty Rate — Mexico → United States

100%

Rate breakdown

9903.04.6096.3%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate

9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)

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Import Tips

• Require DEA registration for precursors; ensure TSCA premanufacture notice

• Common issue: Incomplete CoC leads to port detention for warfare agent suspects