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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If complete dehydration to oxide
Calcination converting >90% to Al2O3 shifts to oxide subheading.
If formed into finished filter cartridges
Assembled filtration equipment falls under Chapter 84 machinery.
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Import Tips & Compliance
• Include Loss on Ignition (LOI) test results proving hydroxide retention
• Specify attrition resistance for fluidized bed applications in documentation
Related Products 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.