High-Purity Polyphosphoric Acid for Semiconductor Etching
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.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the acid is doped for use in electronics
Chemical elements doped for electronics use may be classified under Chapter 38.
If the acid is part of a chemical preparation for electronics
Preparations for semiconductor manufacturing may fall under Chapter 38.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• 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
Related Products under Tariff item 2809.20.00
52% P2O5 Phosphoric Acid for NPK Fertilizer Production
Industrial-grade phosphoric acid at 52% P2O5 concentration from wet process, designed for blending into NPK fertilizers. It is a separate chemically defined compound, meeting Chapter 28 Note 1(a), and falls under this tariff item as phosphoric acid.
85% Food Grade Phosphoric Acid
85% food grade phosphoric acid, certified for use in beverages like colas and as a pH regulator in processed foods. This chemically defined phosphoric acid is classified under tariff item 2809.20.00, meeting Chapter 28's requirements for separate chemically defined compounds.
Dentistry Grade Phosphoric Acid Etchant
Dentistry grade phosphoric acid etchant, a 37% phosphoric acid gel used for dental enamel etching prior to bonding composite restorations. Although gelled, the base compound is a chemically defined inorganic acid, so it is classified under tariff item 2809.20.00.
Dentrifrice Grade Phosphoric Acid 50%
A 50% aqueous solution of phosphoric acid, chemically defined as H3PO4, formulated for use in toothpaste and dental etching gels. It meets Chapter 28 Note 1(b) as a solution in water and is classifiable under this tariff item as phosphoric acid.
Electronic Grade Phosphoric Acid 99%
Electronic grade phosphoric acid at 99% purity, used for semiconductor etching and wafer cleaning in microchip production. This ultra-pure, chemically defined phosphoric acid is classified under tariff item 2809.20.00, meeting Chapter 28's criteria for inorganic acids.
Electronic Grade Phosphoric Acid 99.999%
Ultra-high purity phosphoric acid (99.999% H3PO4) used in semiconductor etching and wafer cleaning. It is a separate chemically defined compound, meeting Chapter 28 Note 1(a), and falls under this tariff item as phosphoric acid.