</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

Molybdenum Trioxide Catalyst from Canada

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 — Canada → United States

12.8%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada

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

Molybdenum Trioxide Catalyst from Canada — Import Duty Rate | HTS 3815.90.20.00