2931.90.90.30/2-Chlorovinyldichloroarsine (Lewisite 1)/China

2-Chlorovinyldichloroarsine (Lewisite 1) from China

2-Chlorovinyldichloroarsine is a highly toxic organoarsenic compound classified under HTS 2931.90.90.30 as an other organo-inorganic compound where arsenic is directly linked to carbon. It features a vinyl chloride group attached to arsenic dichloride, fitting Chapter 29's scope for separate chemically defined organic compounds with metallic elements.

Duty Rate — China → United States

137.5%

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

9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter

9903.88.0425%Except as provided in headings 9903.88.33, 9903.88.34, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(g) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(g)

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Import Tips

• Obtain special licenses from BIS and ATF due to its status as a chemical weapon precursor; ensure UN-approved packaging for toxic substances

• Verify chemical purity documentation to avoid reclassification; common pitfall is inadequate hazard labeling leading to customs holds