Ammonium Peroxosulfate from Canada
Ammonium peroxosulfate (NH4)2S2O8 is an oxidizing salt used in etching and polymerization. It imports under 2842.90.90 as other salts of peroxoacids (peroxosulfuric acid).
Duty Rate — Canada → United States
13.3%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Classify as Class 5.1 oxidizer with UN 1444 designation for transport
• Limit quantities per package per dangerous goods regulations
• Provide stability test data for hot/humid import routes