Diammonium Potassium Persulfate from Canada
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 — Canada → United States
13.1%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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