Monopersulfate Triple Salt (Oxone) from Japan
2KHSO5·KHSO4·K2SO4, commercially known as Oxone, is a white powder used for oxidation in pool sanitation and organic synthesis. Despite containing regular sulfate, primary classification under HTS 2833.40.60.50 as potassium peroxosulfate (monopersulfate) 'other' due to dominant peroxoacid salt component. Chemically defined per Chapter 28 notes.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Submit compositional analysis showing 2KHSO5 as active ingredient to justify peroxosulfate heading over mixed salts
• Classify EPA pesticide registration if for antimicrobial pool use; provide end-use statement
• Avoid 2833.27 (aluminum potassium sulfate) confusion; specify monopersulfate structure