Granular Potassium Tetrapolyphosphate from Mexico
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 — Mexico → United States
13.1%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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