Ammonium Persulfate Powder from Japan
Ammonium persulfate ((NH4)2S2O8) is a strong oxidizing agent in granular or powder form, widely used as a radical initiator in acrylic and vinyl polymerizations. Classified under HTS 2833.40.60 as 'other' peroxosulfates per Chapter 28 notes for chemically defined persalts. It qualifies as an ammonium peroxysalt under heading provisions.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide assay results (>98% purity) to distinguish from mixtures; label as oxidizer Class 5.1 for transport; check for REACH compliance if transshipping from EU