Ammonium Alum Powder from Mexico
Ammonium aluminum sulfate (NH4Al(SO4)2·12H2O) is a powdered alum used in flameproofing textiles and baking powder production. Classified in HTS 2833.30.00.00 as an alum due to its double sulfate composition.
Duty Rate — Mexico → United States
11.6%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Provide certificate of analysis showing double salt formation; label clearly to avoid confusion with fertilizers
• Comply with REACH if destined for EU