</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

Ferric Ammonium Alum from Japan

Ferric ammonium alum (NH4Fe(SO4)2·12H2O) serves as a coagulant in water treatment and mordant in dyeing. HTS 2833.30.00.00 covers it as an iron-based alum.

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%

Import Tips

Ensure wastewater treatment labeling; provide iron content assay

Pitfall: mislabeling as single ferric sulfate