High Purity Potassium Stannate 99% from Canada
99% pure potassium stannate crystals for laboratory and semiconductor applications requiring ultra-clean stannate sources. Precisely classified under HTS 2841.90.30.00 as chemically defined potassium stannate per Chapter 28 Note 1. Essential for atomic layer deposition of tin oxide films.
Duty Rate — Canada → United States
13.1%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Include lot-specific purity certificates; use child-resistant packaging for lab quantities
• Pitfall: semiconductor end-use doesn't change chemical classification