Potassium Pyrophosphate from Canada
Potassium pyrophosphate (K4P2O7) serves as a buffering agent and dispersant in metal cleaning solutions and food processing. Classified under HTS 2835.39.10.00 as a polyphosphate of potassium meeting Chapter 28 definitions for chemically defined inorganic compounds. It is commonly used in industrial formulations.
Duty Rate — Canada → United States
13.1%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Ensure product is pure potassium polyphosphate; blends with organics may shift to Chapter 38
• Provide detailed chemical formula and CAS number (e.g
• 7320-34-5) on commercial invoice
• Comply with EPA water quality standards if destined for treatment applications to prevent import delays