Aluminum hydroxide
Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide. > Aluminum hydroxide > Aluminum hydroxide
Duty Rate (from China)
Subheadings
Products classified under Tariff item 2818.30
Aluminum Hydroxide Flame Retardant Filler
Micronized aluminum hydroxide used as a halogen-free flame retardant and smoke suppressant in plastics and rubber. It is a chemically defined compound (Al(OH)3) of high purity, meeting the terms of Chapter 28 Note 1(a) and classified under tariff item 2818.30.00.
2818.30.00Aluminum Hydroxide Gel USP (Antacid Suspensions)
USP-grade aluminum hydroxide gel for liquid antacid formulations and phosphate binders. Despite being in gel form, it is a chemically defined compound of aluminum hydroxide, meeting Chapter 28 Note 1(b) as a product dissolved or suspended in water, and is classifiable under tariff item 2818.30.00.
2818.30.00Aluminum Hydroxide Paper Filler Precipitate
Precipitated aluminum hydroxide used as a retention aid and filler in alkaline paper manufacturing. With chemical purity exceeding 99.5% Al(OH)3, it qualifies as a separate chemically defined compound under Chapter 28 Note 1(a) and is classified under tariff item 2818.30.00.
2818.30.00Aluminum Hydroxide Powder (Pharmaceutical Grade)
Fine aluminum hydroxide powder used as an antacid in pharmaceutical formulations. It is a chemically defined compound of high purity, distinct from mixed or impure preparations, and therefore falls under tariff item 2818.30.00 as aluminum hydroxide.
2818.30.00Athermal Aluminum Trihydroxide (Cable Compounds)
High-purity aluminum trihydroxide (ATH) processed for low-smoke zero-halogen (LSZH) cable insulation compounds. It is a chemically defined compound with optimized particle morphology, meeting Chapter 28 Note 1(a) and classified under tariff item 2818.30.00.
2818.30.00Flash-Calcined Aluminum Hydroxide (Adsorbent)
Flash-calcined aluminum hydroxide is produced by rapidly heating aluminum hydroxide to drive off partial water content, creating a high-porosity material that serves as a precursor to activated alumina. It retains more than 50% hydroxide content, which qualifies it for classification under tariff item 2818.30.00 as aluminum hydroxide rather than as aluminum oxide. This product is commonly used in gas and liquid adsorption applications, including dehydration processes.
2818.30.00Gibbsite Aluminum Hydroxide (Bayer Process)
Crystalline gibbsite form of aluminum hydroxide produced via the Bayer process from bauxite ore. It is a pure aluminum hydroxide mineral and a chemically defined compound, classifiable under tariff item 2818.30.00, despite its natural origin, as it is not a precious stone or metal.
2818.30.00Hydrated Alumina Precipitate (Water Treatment)
Precipitated aluminum hydroxide used as a coagulant in municipal and industrial water purification systems. It is a chemically defined compound of aluminum hydroxide, meeting Chapter 28 Note 1(a), and is classified under tariff item 2818.30.00 for its role in water treatment.
2818.30.00Martialite Synthetic Aluminum Hydroxide
Martialite synthetic aluminum hydroxide is a manufactured form of aluminum hydroxide with a defined crystal structure, typically bayerite or another polymorph, produced for use in ceramics and catalyst manufacturing. Its synthetic origin and high surface area exceeding 200 m²/g distinguish it from natural mineral forms, supporting classification under tariff item 2818.30.00. The product is not a natural mineral and falls within the scope of chemically defined aluminum hydroxide.
2818.30.00Nano-Aluminum Hydroxide Precipitate
Ultrafine 50-100nm aluminum hydroxide nanoparticles for transparent flame retardant coatings and advanced composites. Despite nanoscale, it is a chemically defined compound with unchanged composition, meeting Chapter 28 Note 1(a) and classified under tariff item 2818.30.00.