Lewisite 1 Technical Grade from China
Technical grade 2-Chlorovinyldichloroarsine (Lewisite 1) is a synthetic organo-inorganic compound used in chemical research, classified under HTS 2931.90.90.30. The arsenic-carbon bond and chlorine substitutions qualify it as an 'other' organo-inorganic compound per heading 2931 specifications.
Duty Rate — China → United States
28.7%
Rate breakdown
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)
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Declare as Schedule 1 chemical under Chemical Weapons Convention; use DOT-approved containers
• Pitfall: Failing to provide SDS can trigger EPA scrutiny; pair with end-use certificates for clearance