Alum Cake (Aluminum Sulfate Byproduct) from Germany
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 — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
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