Reactive Alumina for Ceramics
Fine reactive aluminum oxide powder with high sintering reactivity for technical ceramics. Falls under HTS 2818.20.00.00 as pure aluminum oxide, not artificial corundum.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If formed into crucibles, muffles or nozzles
Refractory ceramic articles of >50% Al2O3 classified in 6903.
If natural mineral product like bauxite residue
Natural aluminous ores excluded from synthetic compounds.
If blended into chemical preparations for lab use
Prepared chemical mixtures fall outside pure Chapter 28 compounds.
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Import Tips & Compliance
• Specify median particle size (0.5-1.5 microns) and soda content (<0.3%) in import docs
• Classify before forming/sintering; finished ceramics go to Chapter 69
• Avoid mixtures exceeding 2% other substances per chemical compound purity rules
Related Products under HTS 2818.20.00.00
Calcined Alumina Powder
High-purity calcined aluminum oxide (Al2O3) powder used in ceramic production and refractories. It is chemically defined as aluminum oxide but not processed into artificial corundum, distinguishing it from synthetic gem materials under HTS 2818.20.00.00.
Activated Alumina Desiccant
Porous aluminum oxide beads activated for moisture adsorption in gas drying and water purification. Classified under HTS 2818.20.00.00 as chemically defined aluminum oxide, excluding artificial corundum used for abrasives.
High-Purity Alumina for LEDs
Ultra-fine 99.99% pure aluminum oxide powder for LED substrate manufacturing and electronics ceramics. Falls under HTS 2818.20.00.00 as chemically defined Al2O3 other than artificial corundum.
Tabular Alumina for Refractories
Dense, tabular-shaped aluminum oxide grains produced by sintering for high-temperature refractory bricks. Classified in HTS 2818.20.00.00 as aluminum oxide distinct from artificial corundum abrasives.
Alpha Alumina Catalyst Support
Alpha-phase aluminum oxide spheres used as inert support for petroleum refining catalysts. HTS 2818.20.00.00 applies to this chemically defined compound other than artificial corundum.
Aluminum Oxide Polishing Powder
Colloidal-grade aluminum oxide powder for precision optical lens polishing. Chemically defined under HTS 2818.20.00.00, separate from artificial corundum abrasives.