Cerium Oxide Polishing Catalyst
Ceria nanoparticles catalyzing chemical mechanical planarization in semiconductor manufacturing. Classified under 3815.90.3000 as inorganic reaction accelerator.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If rare earth compounds without formulation
Pure cerium compounds classified in inorganic chemicals chapter
If refractory cements/mortars
Construction ceramic applications fall under refractory preparations
If with dispersants for general polishing
Organic additives shift to chemical preparations heading
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• ITAR/EAR export controls may apply for semiconductor end-use; obtain validated licenses
• Particle size <50nm and zeta potential specs confirm catalytic grade
• Radioactive impurity limits (<1ppm) required for cleanroom certification
Related Products under HTS 3815.90.30.00
Zinc Stearate Powder
Zinc stearate is a fine white powder used as a lubricant and release agent in plastics and rubber manufacturing. It qualifies under HTS 3815.90.3000 as a catalytic preparation consisting wholly of inorganic substances, specifically zinc compounds that facilitate polymerization reactions.
Aluminum Chlorohydrate Catalyst
Catalytic-grade aluminum chlorohydrate used in polymerization processes for water treatment resins. Classified under 3815.90.3000 as it consists entirely of inorganic aluminum compounds acting as reaction accelerators.
Sodium Perborate Accelerator
Anhydrous sodium perborate used as oxygen bleach catalyst in epoxy resin curing. Falls under HTS 3815.90.3000 as a wholly inorganic reaction accelerator for industrial coatings.
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.
Titanium Dioxide Accelerator
Nano-grade TiO2 used as photoinitiator in UV-curable coatings. HTS 3815.90.3000 covers this wholly inorganic catalytic preparation for radical polymerization.
Zeolite Y Reaction Initiator
Synthetic zeolite Y faujasite used as shape-selective catalyst in hydrocarbon cracking. HTS 3815.90.3000 for wholly inorganic aluminosilicate framework.