Potassium Dithionite from Canada
Potassium dithionite (K2S2O4) serves as a strong reducing agent in chemical synthesis and wastewater treatment. It is categorized under HTS 2831.90.00.00 for other dithionites, as a chemically defined inorganic compound per Chapter 28 Note 1. Primarily supplied as technical grade powder for industrial applications.
Duty Rate — Canada → United States
15.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Include SDS with detailed composition to distinguish from sulfoxylates (which share reducing properties)
• Monitor for spontaneous decomposition; ship with temperature control under 30°C
• Confirm not covered under Montreal Protocol chemicals to avoid additional declarations