Anhydrous Aluminum Sulfate
Anhydrous aluminum sulfate (Al2(SO4)3) is the dehydrated form of this aluminum salt, used in industrial applications like paper sizing and flame retardants. Classified under HTS 2833.22.00.00 specifically as a sulfate of aluminum.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If modified with organic stabilizers
Organo-inorganic aluminum compounds may fall under heading 2818 if not purely inorganic.
If prepared with additives for specific industrial use
Chemical preparations not chemically defined elsewhere go to heading 3824.
If containing more than 0.5% water as non-hydrate impurity
Slightly hydrated forms might be treated as other sulfates if not meeting pure criteria.
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Import Tips & Compliance
• Confirm anhydrous status through lab testing to avoid misclassification as hydrate; comply with TSCA registration for chemical substances; store in moisture-proof packaging to prevent hydration during transit
Related Products under HTS 2833.22.00.00
Aluminum Sulfate Octadecahydrate
Aluminum sulfate octadecahydrate (Al2(SO4)3·18H2O) is a chemically defined inorganic salt of aluminum used primarily in water purification and wastewater treatment as a coagulant. It falls under HTS 2833.22.00.00 as a sulfate of aluminum, distinct from other metal sulfates in heading 2833.
Technical Grade Aluminum Sulfate
Technical grade aluminum sulfate, typically 17% Al2O3 basis, serves as a flocculant in municipal water treatment plants. It is a chemically defined sulfate of aluminum, fitting HTS 2833.22.00.00 per Chapter 28 definitions.
Alum Cake (Aluminum Sulfate Byproduct)
Alum cake is a solid byproduct form of aluminum sulfate from water treatment, containing the chemically defined Al2(SO4)3 compound. It remains classified under HTS 2833.22.00.00 as an aluminum sulfate.
Liquid Aluminum Sulfate Solution 48%
Liquid aluminum sulfate solution at 48% concentration is an aqueous form of the aluminum salt used for coagulation in industrial processes. Despite being in solution, the chemically defined compound places it under HTS 2833.22.00.00.
Granular Aluminum Sulfate for Paper Sizing
Granular aluminum sulfate specifically formulated for rosin sizing in paper production reacts with resins to improve water resistance. As a pure sulfate of aluminum, it is classified in HTS 2833.22.00.00.
Pharmaceutical Grade Aluminum Sulfate
USP-grade aluminum sulfate meets strict purity standards for pharmaceutical applications like astringents in topical formulations. Its chemically defined nature as an aluminum sulfate confirms HTS 2833.22.00.00 classification.