Molybdenum Trioxide Catalyst from Mexico
Pure molybdenum trioxide (MoO3) used as a catalyst in petroleum refining processes like hydrodesulfurization. This inorganic compound falls under HTS 3815.90.2000 because it consists wholly of inorganic substances, specifically molybdenum, and serves as a reaction accelerator not specified elsewhere.
Duty Rate — Mexico → United States
12.8%
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
Import Tips
• Verify purity and composition via lab analysis to confirm 100% inorganic molybdenum content for this subheading
• Include safety data sheets (SDS) documenting non-toxicity and catalytic use to avoid hazardous material surcharges