Diammonium Potassium Persulfate from Mexico
A double salt combining potassium persulfate with ammonium, used in etching and polymerization applications. Classified under HTS 2833.40.60.10 as a peroxosulfate of potassium per Chapter 28 note on double salts in 2842, but specifically as 'other' potassium peroxosulfates here.
Duty Rate — Mexico → United States
13.1%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide assay reports proving potassium content and peroxo structure; label as double salt to avoid ammonium-only classification
• Watch for moisture content affecting stability during shipping