Vinyl Norbornene Petrochemical from China
5-Vinyl-2-norbornene (VNB, C9H10) Diels-Alder adduct from petroleum cyclopentadiene and butadiene. Despite bicyclic structure, HTS 2901.29.10 as petroleum unsaturated acyclic hydrocarbon derivative. ENB alternative in EPDM rubber terpolymerization.
Duty Rate — China → United States
37.5%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 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
• Specify endo/exo ratio (85/15 typical) affecting copolymer reactivity
• Solid at room temp; specify molten handling temp 60-80°C
• Low chlorine (<10 ppm) critical for Ziegler-Natta catalyst compatibility