Aluminum Ammonium Sulfate (Ammonium Alum) from China
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 — China → United States
37.5%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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