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
110%
Rate breakdown
9903.04.6096.3%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Require DEA registration for precursors; ensure TSCA premanufacture notice
• Common issue: Incomplete CoC leads to port detention for warfare agent suspects