Aluminum hydroxide
Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide: > Aluminum hydroxide
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 2818.30.00.00
Athermal Aluminum Trihydroxide (Cable Compounds)
High-purity aluminum trihydroxide (ATH) specifically processed for low-smoke zero-halogen (LSZH) cable insulation compounds. Classified HTS 2818.30.00.00 for chemically defined status with optimized particle morphology for dispersion. Releases water vapor at 200°C for flame suppression.
Nano-Aluminum Hydroxide Precipitate
Ultrafine 50-100nm aluminum hydroxide nanoparticles for transparent flame retardant coatings and advanced composites. HTS 2818.30.00.00 as chemically defined despite nanoscale due to unchanged composition. Dispersion stability in aqueous media.
Aluminum Hydroxide Powder (Pharmaceutical Grade)
Fine aluminum hydroxide powder used as an antacid in pharmaceutical formulations like heartburn relief tablets. It falls under HTS 2818.30.00.00 as chemically defined aluminum hydroxide, distinct from mixed or impure preparations. Purity exceeds 99% for medical applications.
Gibbsite Aluminum Hydroxide (Bayer Process)
Crystalline gibbsite form of aluminum hydroxide produced via the Bayer process from bauxite ore for alumina production. Classified under HTS 2818.30.00.00 as pure aluminum hydroxide mineral. Used primarily in aluminum smelting feedstock.
Aluminum Hydroxide Flame Retardant Filler
Micronized aluminum hydroxide used as halogen-free flame retardant and smoke suppressant in plastics and rubber. Meets HTS 2818.30.00.00 as chemically defined compound due to high purity and endothermic decomposition properties. Typical particle size 1-10 microns.
Hydrated Alumina Precipitate (Water Treatment)
Precipitated aluminum hydroxide used as coagulant in municipal and industrial water purification systems. Falls under HTS 2818.30.00.00 as chemically defined for its role in removing suspended solids and phosphates. Supplied as 10-20% slurry or powder.
Martialite Synthetic Aluminum Hydroxide
Synthetic bayerite/polymorphic aluminum hydroxide used in ceramics and catalyst manufacturing. HTS 2818.30.00.00 classification due to defined crystal structure distinct from natural minerals. High surface area >200m²/g for adsorption applications.
Aluminum Hydroxide Gel USP (Antacid Suspensions)
USP-grade aluminum hydroxide gel for liquid antacid formulations and phosphate binders in renal medications. Meets HTS 2818.30.00.00 as chemically defined despite gel form due to retained hydroxide composition. Viscosity 1000-3000 cps for suspension stability.
Flash-Calcined Aluminum Hydroxide (Adsorbent)
Rapidly calcined aluminum hydroxide forming high-porosity activated alumina precursor for gas/liquid adsorption. Borderline HTS 2818.30.00.00 if retaining >50% hydroxide content post-flash process. Used in dehydration of natural gas streams.
Aluminum Hydroxide Paper Filler Precipitate
Precipitated aluminum hydroxide used as retention aid and filler in alkaline paper manufacturing replacing titanium dioxide. Classified HTS 2818.30.00.00 for chemical purity >99.5% Al(OH)3. Improves paper brightness and opacity.