2818.30.00.00 - Aluminum hydroxide 🖩

This classification, HTS 2818.30.00.00, specifically covers aluminum hydroxide. Aluminum hydroxide is an inorganic chemical compound with the formula Al(OH)₃. It is typically found as a white, amorphous powder or in crystalline forms and is a key intermediate in the production of other aluminum compounds. Its primary uses include as a flame retardant filler in plastics and rubber, in the manufacturing of activated alumina, zeolites, and aluminum salts, and as an antacid and pharmaceutical ingredient.

This category is distinguished from its siblings by its chemical composition and form. HTS 2818.10.00.00 pertains to artificial corundum, which is a crystalline form of aluminum oxide (alumina) known for its hardness and abrasive properties. HTS 2818.20.00.00, conversely, covers other forms of aluminum oxide that are not classified as artificial corundum, often used in refractories, ceramics, and catalysts. Aluminum hydroxide, therefore, is differentiated as the hydrated form of aluminum oxide, prior to its calcination into anhydrous alumina.

As a leaf node in the HTS structure, HTS 2818.30.00.00 does not have further subcategories. Classification under this heading relies on the material being predominantly aluminum hydroxide, irrespective of its physical form (e.g., powder, paste). Exclusions would generally apply to finished articles incorporating aluminum hydroxide, or other aluminum compounds that have undergone further chemical processing or are classified under different headings.