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2833.22.00.00/Alum Cake (Aluminum Sulfate Byproduct)/Mexico

Alum Cake (Aluminum Sulfate Byproduct) from Mexico

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.

Duty Rate — Mexico → United States

10%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• Test for heavy metal contaminants to meet import safety standards; classify based on chemical composition, not physical form; obtain waste import permits if reprocessed