Fumaronitrile from China
Fumaronitrile (NC-CH=CH-CN) is a trans-dicyanoethylene used in Diels-Alder reactions and dyes. HTS 2926.90.5050 for unsaturated nitrile-function compounds under Chapter 29 definitions. Highly electron-deficient dienophile.
Duty Rate — China → United States
25%
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
• Sublimation risk; use sealed containers with desiccants
• Trans isomer confirmation via IR spectroscopy
• Toxicity higher than mononitriles; enhanced PPE declarations