Vanadium Silicide Metathesis Catalyst from Japan
V3Si intermetallic compound used in olefin metathesis reactions under high-pressure conditions. Wholly inorganic vanadium-based catalytic preparation under HTS 3815.90.1000. Offers unique activity for propene disproportionation.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• XPS surface analysis confirming vanadium-silicon catalytic sites required
• Process patents or literature citations proving metathesis activity essential
• Distinguish from semiconductor materials through reaction performance data