Aluminum Ammonium Sulfate (Ammonium Alum) from Germany
Aluminum ammonium sulfate (NH4Al(SO4)2·12H2O), known as ammonium alum, is used as a mordant in dyeing and baking powder. As a salt of aluminum, it falls under HTS 2833.22.00.00 per heading scope for aluminum sulfates.
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
• Disclose full chemical formula on labels to avoid double-salt confusion; GRAS status for food use requires specific documentation; test for ammonia content