2842.90.90/Ammonium Peroxosulfate/Mexico

Ammonium Peroxosulfate from Mexico

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 — Mexico → United States

13.3%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico

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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