Of aluminum
Sulphides; polysulphides, whether or not chemically defined. > Other sulphates: > Of aluminum > Of aluminum
Duty Rate (from China)
Subheadings
Products classified under Tariff item 2833.22
Alum Cake (Aluminum Sulfate Byproduct)
Alum cake is a solid byproduct of aluminum sulfate from water treatment processes, containing the chemically defined compound Al2(SO4)3. It is classified under tariff item 2833.22.00 as an aluminum sulfate, regardless of its byproduct origin, provided it meets the purity and form criteria of Chapter 28.
2833.22.00Aluminum Ammonium Sulfate (Ammonium Alum)
Aluminum ammonium sulfate (NH4Al(SO4)2·12H2O), or ammonium alum, is a double salt of aluminum and ammonium. Under Chapter 28 Note 5, double salts are classified in heading 28.42, not as an aluminum sulfate, so this product does not belong under tariff item 2833.22.00.
2833.22.00Aluminum Sulfate Octadecahydrate
Aluminum sulfate octadecahydrate (Al2(SO4)3·18H2O) is a chemically defined hydrate of aluminum sulfate, used as a coagulant in water purification. Hydrates of inorganic compounds are covered by Chapter 28 Note 1(a) and (b), and the aluminum sulfate core places it under tariff item 2833.22.00.
2833.22.00Anhydrous Aluminum Sulfate
Anhydrous aluminum sulfate (Al2(SO4)3) is the dehydrated form of the aluminum salt, used in paper sizing and flame retardants. As a chemically defined sulfate of aluminum, it falls squarely under tariff item 2833.22.00, with no exclusions in Chapter 28.
2833.22.00Flame Retardant Aluminum Sulfate Powder
Flame retardant aluminum sulfate powder is a fine powder of aluminum sulfate used in flame retardant formulations. As long as it is a chemically defined aluminum sulfate without additional flame retardant agents, it is classified under tariff item 2833.22.00. If it contains other active ingredients, it may be a preparation.
2833.22.00Granular Aluminum Sulfate for Paper Sizing
Granular aluminum sulfate for paper sizing is a pure aluminum sulfate in granular form, used in rosin sizing. The physical form (granular) does not affect classification, and as a chemically defined sulfate of aluminum, it falls under tariff item 2833.22.00.
2833.22.00Liquid Aluminum Sulfate Solution 48%
Liquid aluminum sulfate solution at 48% concentration is an aqueous solution of aluminum sulfate. Chapter 28 Note 1(b) covers products dissolved in water, so this solution is classifiable under tariff item 2833.22.00, provided the solution is a normal method of putting up for transport or safety.
2833.22.00Pharmaceutical Grade Aluminum Sulfate
Pharmaceutical grade aluminum sulfate is a high-purity aluminum sulfate meeting USP standards, used in topical astringents. Purity does not affect classification; as a chemically defined sulfate of aluminum, it falls under tariff item 2833.22.00, unless it is put up in measured doses for retail sale, which would shift it to Chapter 30.
2833.22.00Technical Grade Aluminum Sulfate
Technical grade aluminum sulfate, typically 17% Al2O3 basis, is a chemically defined sulfate of aluminum used as a flocculant in water treatment. The technical grade designation does not affect classification, and it falls under tariff item 2833.22.00 as an aluminum sulfate.