Polyphosphoric Acid 83-85% P2O5
Polyphosphoric acid with a P2O5 content of 83-85% is a viscous, superphosphoric acid used as a catalyst in polymerization reactions and in the production of phosphate esters. It falls under tariff item 2809.20.00 as a polyphosphoric acid, whether or not chemically defined.
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 product is mixed with other substances or not solely a polyphosphoric acid
Mixtures not meeting the chapter's definition of separate chemically defined compounds may fall under chemical products and preparations.
If the product is a different inorganic acid not covered by heading 28.09
Other inorganic acids are classified under heading 28.11 when not specifically described elsewhere.
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
• Ensure the P2O5 concentration is clearly stated on the commercial invoice to support classification under 2809.20.00
• Verify if the product requires a permit under the Chemicals Management Plan or other environmental regulations before import
• Keep safety data sheets available for CBSA inspection
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.