Potassium 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.
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 put up as a fire-extinguisher charge or in grenades.
Preparations and charges for fire-extinguishers are classified in heading 3813.
If the product is misidentified and is calcium bicarbonate.
Calcium bicarbonate is a distinct carbonate under the same heading.
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 product is not put up in fire-extinguishing grenades or charges, as that would exclude it under Chapter 28 Note 3(e)
• Provide a purity certificate to show it is the pure compound, not a formulated charge
• If mixed with flow agents, it may fall under heading 3813 for fire-extinguisher preparations
Related Products under Tariff item 2836.40.00
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.
Bulk 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.
Dipotassium 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.
Dipotassium 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.
Dipotassium 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.
Dipotassium 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.