Ammonium Persulfate Crystals from China
Ammonium persulfate ((NH4)2S2O8) is a white crystalline oxidizer used in polymerization and etching, under HTS 2833.29.51.90 as other peroxosulfates not elsewhere specified. Chapter notes confirm classification for ammonium peroxysalts.
Duty Rate — China → United States
28.7%
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)
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Classify as UN 1444 hazardous material with proper oxidizing labels
• Store below 30°C; declare temperature control if container shipment
• Provide polymerization inhibitor content if stabilized