Technical 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.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the technical grade product is blended with other water treatment chemicals
Formulated water treatment products are not covered by Chapter 28.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Confirm the product is not a mixture with other flocculants or polymers, which would exclude it from Chapter 28
• Provide the Al2O3 content and impurity profile to the CBSA
• Ensure the product is not contaminated with organic matter that would make it a waste product
Related Products under Tariff item 2833.22.00
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.
Aluminum 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.
Aluminum 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.
Anhydrous 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.
Flame 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.
Granular 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.