Ammonium Molybdate Catalyst from China
Ammonium heptamolybdate ((NH4)6Mo7O24) used as a selective oxidation catalyst in acrylic acid production. Falls under HTS 3815.90.2000 as a wholly inorganic molybdenum-based catalytic preparation.
Duty Rate — China → United States
37.8%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 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
• Test for ammonia content stability; decomposition could shift classification away from 'wholly inorganic'
• Include end-use statement from buyer confirming catalytic application to support tariff positioning