High-Purity Polyphosphoric Acid for Semiconductor Etching from United States
High-purity polyphosphoric acid (99%+) free of metallic impurities, used in microelectronics for wafer etching and doping. This chemically defined polyphosphoric acid is classified under tariff item 2809.20.00, meeting Chapter 28's criteria for inorganic acids.
Duty Rate — United States → Canada
0%
Import Tips
• Confirm the purity and metallic impurity levels with a certificate of analysis, as semiconductor-grade requires ultra-low contaminants
• Check if the product is subject to export controls or requires a permit under Canada's Export and Import Permits Act
• Ensure proper packaging and labeling for hazardous materials under the Transportation of Dangerous Goods regulations