Granular Potassium Tetrapolyphosphate from Canada
Granular potassium tetrapolyphosphate provides slow-release phosphate in industrial water treatment systems. Classified HTS 2835.39.10.00 for other polyphosphates of potassium. Granular form enhances handling in large-scale operations.
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
• Specify particle size distribution to distinguish from powdered forms
• Include solubility data confirming polyphosphate structure
• Verify no organic stabilizers present to maintain Chapter 28 classification