1,4-Dioxane from Japan
1,4-Dioxane is a six-membered heterocyclic ring with two oxygen atoms in 1,4-positions, aromatic heterocyclic compound under HTS 2932.99.70.00. Widely used as an industrial solvent despite regulatory concerns.
Duty Rate — Japan → United States
21%
Rate breakdown
9903.04.628.5%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) of U.S. note 40 to this subchapter
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include purity analysis certificate as 1,4-dioxane often requires REACH/TSCA compliance documentation
• Verify solvent does not render product suitable for specific use per chapter note (e)
• Label with hazard warnings; may require DOT hazardous material declaration