Tetrachlorocyclobutane from China
Tetrachlorocyclobutane features a four-membered ring with four chlorine atoms, used as a reactive intermediate. Classified in HTS 2903.89.70 for halogenated cyclanic hydrocarbon derivatives outside specific subheadings. Pure compound status confirmed by Chapter 29 note (a).
Duty Rate — China → United States
28.7%
Rate breakdown
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)
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
• Supply vapor pressure data for proper ventilation requirements during unloading
• Use temperature-controlled containers (<30°C) to maintain ring stability
• Document synthetic route to confirm no sulfonated byproducts present