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
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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