Ammonium Persulfate Powder from China
Ammonium persulfate (NH4)2S2O8 is a white crystalline powder used as an oxidizing agent in polymerization reactions for producing plastics and adhesives. It falls under HTS 2833.40.60.20 as a peroxosulfate of ammonium, chemically defined per Chapter 28 notes. This industrial chemical initiates free radical reactions in aqueous systems.
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
• Verify purity certificate to confirm 'chemically defined' status per Chapter 28 Note 1; ensure SDS and proper UN hazmat labeling as oxidizer; avoid misclassification as general sulfate under 2833.29