Phosphoric acid and polyphosphoric acids
Diphosphorus pentaoxide; phosphoric acid; polyphosphoric acids, whether or not chemically defined. > Phosphoric acid and polyphosphoric acids
Duty Rate (from China)
Products classified under Tariff item 2809.20
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.
2809.20.0085% 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.
2809.20.00Dentistry 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.
2809.20.00Dentrifrice 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.
2809.20.00Electronic 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.
2809.20.00Electronic 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.
2809.20.00Fertilizer Grade Phosphoric Acid 52% P2O5
A liquid phosphoric acid solution with approximately 52% available P2O5 equivalents, formulated for agricultural fertilizers. It is a separate chemically defined compound, meeting Chapter 28 Note 1(a), and falls under this tariff item as phosphoric acid.
2809.20.00Food Grade Phosphoric Acid 85%
An 85% aqueous solution of phosphoric acid, chemically defined as H3PO4, used in food and beverage acidification. It meets Chapter 28 Note 1(b) as a solution in water and is classifiable under this tariff item.
2809.20.00Green Liquor Phosphoric Acid 53% P2O5 Fertilizer Grade
Dark green phosphoric acid from wet process with 53% P2O5, high in organic impurities, exclusively for fertilizer use in MAP/DAP plants. It is a separate chemically defined compound, meeting Chapter 28 Note 1(a), and falls under this tariff item as phosphoric acid.
2809.20.00High-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.
2809.20.00Industrial 75% Phosphoric Acid
Industrial 75% phosphoric acid used in metal surface treatment, rust removal, and phosphate coating for automotive parts. This chemically defined phosphoric acid is classified under tariff item 2809.20.00, meeting Chapter 28's requirements for inorganic acids.
2809.20.00Industrial Polyphosphoric Acid for Polymer Catalysts
Industrial polyphosphoric acid used as a catalyst in alkylation and polyester production, with extended phosphate chains. This chemically defined polyphosphoric acid is classified under tariff item 2809.20.00, meeting Chapter 28's requirements.
2809.20.00Low Concentration Fertilizer Phosphoric Acid 48% P2O5
A 48% P2O5 phosphoric acid solution optimized for liquid fertilizer formulations. It is a separate chemically defined compound, meeting Chapter 28 Note 1(a), and falls under this tariff item as phosphoric acid.
2809.20.00Merchant Grade Phosphoric Acid 54% P2O5
Merchant grade phosphoric acid (MGA) at 54% P2O5, a wet-process acid used primarily in fertilizer manufacturing. It is a separate chemically defined compound, meeting Chapter 28 Note 1(a), and falls under this tariff item as phosphoric acid.
2809.20.00Merchant-Impure Phosphoric Acid for Bulk Fertilizers
Merchant-impure phosphoric acid at 52% P2O5 with elevated green/yellow impurities, sourced for large-scale fertilizer production such as triple superphosphate. This lower-purity grade is not chemically defined and falls under tariff item 2809.20.00 as phosphoric acid, meeting the Chapter 28 criteria for inorganic acids.
2809.20.00Pharmaceutical Grade Phosphoric Acid
Pharmaceutical grade phosphoric acid, USP-grade, used as an excipient in oral suspensions, buffers, and effervescent tablets. This chemically defined phosphoric acid is classified under tariff item 2809.20.00, meeting Chapter 28's criteria for inorganic acids.
2809.20.00Pharmaceutical Grade Phosphoric Acid USP
USP-compliant phosphoric acid for pharmaceutical buffering and oral care formulations. It is a separate chemically defined compound, meeting Chapter 28 Note 1(a), and falls under this tariff item as phosphoric acid.
2809.20.00Phosphorus Pentoxide-Derived Polyphosphoric Acid
Phosphorus pentoxide-derived polyphosphoric acid produced by dissolving diphosphorus pentoxide (P2O5) in phosphoric acid, forming chains of (HPO3)n. Used in cyclization reactions and as a dehydrating agent, this chemically defined polyphosphoric acid is classified under tariff item 2809.20.00.
2809.20.00Polyphosphoric Acid 105% for Flame Retardant Synthesis
Polyphosphoric acid at 105% H3PO4 strength, employed in manufacturing ammonium polyphosphate flame retardants. This chemically defined polyphosphoric acid is classified under tariff item 2809.20.00, meeting Chapter 28's criteria.
2809.20.00Polyphosphoric Acid 115%
Polyphosphoric acid with approximately 115% H3PO4 equivalent, a viscous, colorless to yellow liquid used primarily as a phosphorylating agent in organic synthesis. This chemically defined polyphosphoric acid is classified under tariff item 2809.20.00.
2809.20.00Polyphosphoric Acid 115% P2O5 Equivalent
Concentrated polyphosphoric acid with 115% P2O5 equivalent, used in organic synthesis and catalyst manufacturing. It is a chemically defined polyphosphoric acid, meeting Chapter 28 Note 1(a), and falls under this tariff item.
2809.20.00Polyphosphoric 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.
2809.20.00Polyphosphoric Acid Blend 60% P2O5 Fertilizer Grade
A blend of phosphoric and polyphosphoric acids totaling 60% P2O5 equivalents, used in high-analysis liquid fertilizers. It is a mixture of chemically defined compounds, meeting Chapter 28 Note 1(a), and falls under this tariff item as phosphoric and polyphosphoric acids.
2809.20.00Polyphosphoric Acid Equivalent 115% Basis
Polyphosphoric acid equivalent to 115% P2O5 basis, bordering polyphosphoric but classified as simple phosphoric acid under tariff item 2809.20.00. Used in catalyst production and polymer synthesis, this chemically defined compound meets Chapter 28's criteria.
2809.20.00Rust Converter Phosphoric Acid Solution
Rust converter phosphoric acid solution, a technical grade acid that converts iron oxide rust to inert phosphate compounds for surface preparation. The base phosphoric acid content exceeds other components, so it is classified under tariff item 2809.20.00.
2809.20.00Superphosphoric Acid 105% P2O5
High-concentration superphosphoric acid (105% P2O5) used in liquid fertilizers and chemical synthesis. It is a chemically defined polyphosphoric acid, meeting Chapter 28 Note 1(a), and falls under this tariff item.
2809.20.00Technical Grade Phosphoric Acid 75%
Industrial phosphoric acid at 75% concentration for metal surface treatment and rust removal. It is a separate chemically defined compound, meeting Chapter 28 Note 1(a), and falls under this tariff item as phosphoric acid.
2809.20.00Water Treatment Phosphoric Acid 30%
Water treatment phosphoric acid at 30% concentration, used for corrosion inhibition in cooling towers and boiler systems by forming protective phosphate films. This chemically defined phosphoric acid is classified under tariff item 2809.20.00.
2809.20.00Water Treatment Phosphoric Acid 81%
81% phosphoric acid for corrosion control and scale prevention in cooling water systems. It is a separate chemically defined compound, meeting Chapter 28 Note 1(a), and falls under this tariff item as phosphoric acid.
2809.20.00Wet Process Phosphoric Acid 55% P2O5 for MAP Production
Wet-process derived phosphoric acid at 55% P2O5, standard feedstock for monoammonium phosphate (MAP) fertilizer. It is a separate chemically defined compound, meeting Chapter 28 Note 1(a), and falls under this tariff item as phosphoric acid.
2809.20.00Wet Process Phosphoric Acid for DAP Fertilizer
Wet-process phosphoric acid derived from phosphate rock, containing 52-54% P2O5 with typical impurities like fluorides and sulfates, used primarily in diammonium phosphate (DAP) production. This industrial-grade acid is classified under tariff item 2809.20.00 as phosphoric acid, meeting Chapter 28's scope for inorganic acids even with impurities.