Diammonium Potassium Persulfate from China
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 — China → United States
40.6%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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