Selenium Dioxide 99.9% Crystals from Mexico
High-purity 99.9% selenium dioxide in crystalline form for semiconductor doping and specialty chemical synthesis. It is a chemically defined inorganic oxygen compound of the non-metal selenium, excluding doped forms per Chapter 28 note 8.
Duty Rate — Mexico → Canada
0%
Import Tips
• Ensure the crystals are not doped for electronics use, as that would fall under heading 38.18
• Provide purity certificates to the CBSA to support the classification
• Check if the product requires an import permit under Canadian chemical control regulations