Anhydrous Potassium Stannate from Canada
Anhydrous potassium stannate (K2SnO3) is a high-purity, water-free form used in advanced electroplating solutions for corrosion-resistant tin coatings. Classified under HTS 2841.90.30.00 as the potassium salt of stannic acid, meeting Chapter 28 criteria for chemically defined oxometallic salts. It provides stable stannate ions without hydration interference in 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
• Require supplier COA confirming anhydrous state to avoid hydration disputes; package in moisture-proof containers
• Pitfall: Bulk shipments without proper segregation risk contamination and reclassification