2833.22.00.00/Aluminum Ammonium Sulfate (Ammonium Alum)/Japan

Aluminum Ammonium Sulfate (Ammonium Alum) from Japan

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 — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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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