Trioxane from China
1,3,5-Trioxane is a cyclic trimer of formaldehyde used as fuel tablet component and chemical intermediate, qualifying as cyclic polymer of aldehyde per heading 2912 scope. Classified HTS 2912.49.90.00 as other aldehyde-oxygen compound. Chemically defined heterocyclic structure.
Duty Rate — China → United States
39.8%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Melting point (62°C) and cyclic structure confirmation via DSC/NMR
• UN 1166 classification for flammable solid transport
• Purity certificate excluding polymer impurities >2%