Potassium carbonates
Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate. > Potassium carbonates > Potassium carbonates
Duty Rate (from China)
Subheadings
Products classified under Tariff item 2836.40
Anhydrous Dipotassium Carbonate 99% Purity
Anhydrous dipotassium carbonate (K2CO3) at 99% purity is a separate chemically defined compound of potassium, falling squarely under tariff item 2836.40.00 for potassium carbonates. It is used as an intermediate in pharmaceutical synthesis and specialty chemical manufacturing. The product meets Chapter 28 Note 1 criteria as a pure inorganic compound, with no organic or excluded constituents.
2836.40.00Bulk Potassium Hydrogencarbonate for Winemaking
Bulk potassium hydrogencarbonate (KHCO3) for winemaking is a separate chemically defined compound used to reduce acidity in wine must. It is a potassium carbonate salt, specifically the bicarbonate form, which falls under tariff item 2836.40.00 for potassium carbonates. The food-grade purity does not affect classification, and it is not excluded by Chapter 28 notes.
2836.40.00Dipotassium Carbonate Calcined Soda Ash
Calcined dipotassium carbonate, produced from potash, is a form of potassium carbonate (K2CO3) obtained by calcination. It serves as an alkaline agent in textile dyeing and wool processing. As a separate chemically defined compound, it is correctly classified under tariff item 2836.40.00 for potassium carbonates, with no organic or excluded components per Chapter 28 notes.
2836.40.00Dipotassium Carbonate for Glass Flux
Dipotassium carbonate used as a glass flux is a high-purity potassium carbonate (K2CO3) that lowers melting points in flat glass production. It is a separate chemically defined compound, meeting Chapter 28 Note 1 requirements. The product is not excluded by any chapter note, and its industrial use does not alter its classification under tariff item 2836.40.00.
2836.40.00Dipotassium Carbonate Monohydrate Crystals
Dipotassium carbonate monohydrate (K2CO3·H2O) is a hydrated form of potassium carbonate, still a separate chemically defined compound. It is used in laboratory reagents and fine chemical synthesis. The water of hydration is inherent to the compound and does not exclude it from Chapter 28, as it is not a solution but a crystalline hydrate, classifiable under tariff item 2836.40.00.
2836.40.00Dipotassium Carbonate Powder (Technical Grade)
Dipotassium carbonate powder (K2CO3), also known as potash carbonate, is a white, hygroscopic powder for industrial applications like glass and soap production. It is a separate chemically defined compound, meeting Chapter 28 Note 1 criteria. The technical grade does not affect classification, and it falls under tariff item 2836.40.00 for potassium carbonates.
2836.40.00Food-Grade Potassium Bicarbonate Powder
Food-grade potassium bicarbonate powder (KHCO3) is a pure, chemically defined compound used as a leavening agent and acidity regulator. It is a potassium carbonate salt, falling under tariff item 2836.40.00. The food-grade status does not alter classification, as it is not put up for retail sale as a food product.
2836.40.00Granular Dipotassium Carbonate 98% Assay
Granular dipotassium carbonate with 98% assay is a physical form of potassium carbonate (K2CO3) used in water softening and chemical synthesis. Granulation does not alter its chemical identity as a separate chemically defined compound. It is correctly classified under tariff item 2836.40.00, as Chapter 28 covers all physical forms of such compounds.
2836.40.00Pharmaceutical Grade Dipotassium Carbonate USP
Pharmaceutical grade dipotassium carbonate meeting USP standards is a high-purity potassium carbonate (K2CO3) for use in effervescent tablets and pH adjustment. It is a separate chemically defined compound, meeting Chapter 28 Note 1 criteria. The pharmaceutical grade does not exclude it from tariff item 2836.40.00, as it is not put up in measured doses or for retail sale.
2836.40.00Pharmaceutical Potassium Bicarbonate API
Pharmaceutical potassium bicarbonate API (KHCO3) is a pure, chemically defined compound for effervescent tablet production. It is a potassium carbonate salt, classifiable under tariff item 2836.40.00. As an API, it is not put up in measured doses or for retail sale, so it remains in Chapter 28.
2836.40.00Potassium Bicarbonate Agricultural Soil Amendment
Potassium bicarbonate for agricultural soil amendment is a technical-grade potassium hydrogencarbonate (KHCO3) used for pH correction and potassium supplementation. It is a separate chemically defined compound, classifiable under tariff item 2836.40.00. It is not excluded by Chapter 28 notes, as it is not a fertilizer of Chapter 31.
2836.40.00Potassium Bicarbonate Dechlorination Agent
Potassium bicarbonate for dechlorination is a powdered potassium hydrogencarbonate (KHCO3) used to remove chlorine from water. It is a separate chemically defined compound, classifiable under tariff item 2836.40.00. The application does not affect classification, as it is not a preparation or mixture.
2836.40.00Potassium Bicarbonate for Fire Extinguisher Charges
Potassium bicarbonate for fire extinguisher charges is a dry chemical powder (KHCO3) formulated for ABC fire extinguishers. It is a separate chemically defined compound, classifiable under tariff item 2836.40.00. Chapter 28 Note 3(e) excludes products put up as charges for fire-extinguishers, but this product is the pure compound, not a charge, so it remains in this heading.
2836.40.00Potassium Bicarbonate for Swimming Pool pH Balancer
Granular potassium bicarbonate for swimming pool pH balancing is a pure potassium hydrogencarbonate (KHCO3) used to raise alkalinity. It is a separate chemically defined compound, classifiable under tariff item 2836.40.00. The granular form and pool application do not alter classification, as it is not a prepared mixture.
2836.40.00Potassium Bicarbonate USP Grade
Potassium bicarbonate USP grade is a pharmaceutical-grade potassium hydrogencarbonate (KHCO3) used as an antacid. It is a separate chemically defined compound, classifiable under tariff item 2836.40.00. As a pure compound not put up in measured doses, it remains in Chapter 28.