Zirconium Oxide Solid Acid Catalyst from Japan
Sulfated zirconia catalyst for alkylation reactions in gasoline production. Inorganic zirconia base qualifies for 3815.90.3000.
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
• Acid site density measurement (Hammett acidity) confirms catalytic strength
• Thermal stability >500°C distinguishes from ceramic materials
• Sulfate content <10wt% maintains inorganic classification