Technical Grade Ammonium Heptamolybdate from China
Technical grade ammonium heptamolybdate is used in petroleum refining catalysts. Classified in HTS 2841.70.10.00 for ammonium molybdates, chemically defined per subheading note.
Duty Rate — China → United States
16.8%
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
Import Tips
• Specify 'chemically defined' in entry docs per 2852.10 note analogy; watch for TSCA registration
• Common issue: impurities pushing to mixtures in 3824