Molybdenum Trioxide Catalyst

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.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China2.8%+35.0%37.8%
🇲🇽Mexico2.8%+10.0%12.8%
🇨🇦Canada2.8%+10.0%12.8%
🇩🇪Germany2.8%+10.0%12.8%
🇯🇵Japan2.8%+10.0%12.8%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

2841.90.20.00Lower: 28.1% vs 37.8%

If imported as raw chemical rather than catalytic preparation

Raw molybdenum oxides fall under Chapter 28 as inorganic chemicals, not Chapter 38 catalytic preparations.

3815.11.00Lower: 35% vs 37.8%

If supported on inert carrier material

Catalysts supported on carriers like alumina classify under 3815.11, not wholly inorganic unsupported forms.

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Import Tips & Compliance

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