Technical Grade Ammonium Heptamolybdate from Mexico
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 — Mexico → United States
14.3%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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