Vinyl Norbornene Petrochemical from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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