Magnesium Oxide Polymerization Catalyst

High-purity MgO powder serving as catalyst in polypropylene production. Classified in 3815.90.3000 for its wholly inorganic composition and role as reaction initiator.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳ChinaFree+35.0%35%
🇲🇽MexicoFree+10.0%10%
🇨🇦CanadaFree+10.0%10%
🇩🇪GermanyFree+10.0%10%
🇯🇵JapanFree+10.0%10%

Alternative Classifications

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

2519.90.50.00Lower: 10% vs 35%

If calcined for refractory brick production

Magnesia for construction materials classified as mineral products

3815.90.20.00Higher: 37.8% vs 35%

If containing precious metals

Precious metal doping changes the catalytic subheading

2835.25.00.00Same rate: 35%

If pure chemical without processing claims

Basic magnesium oxides lack the preparation requirement of heading 3815

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

Import Tips & Compliance

Surface area specifications (>100m²/g) distinguish catalytic grade from refractory grade

Include polymerization reaction data demonstrating accelerator function

Antidumping duties may apply from certain origins; verify scope rulings