Potassium Nitrate for Heat Storage Salts
Potassium nitrate for heat storage salts is a chemically defined potassium nitrate (KNO3) used as a component in solar thermal heat transfer and storage salt mixtures. It falls under tariff item 2834.21.00 as a base compound, not a prepared mixture.
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 imported as part of a pre-mixed heat storage salt
Prepared chemical mixtures for heat storage are classified under heading 38.24.
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
• Specify that the product is pure potassium nitrate, not a pre-mixed heat storage salt
• Provide a certificate of analysis to confirm purity
• If the product is part of a mixture, declare the mixture separately under the appropriate heading
Related Products under Tariff item 2834.21.00
Battery Grade Potassium Nitrate
Battery grade potassium nitrate is an ultra-pure, chemically defined inorganic compound of potassium nitrate (KNO3) used as an electrolyte component in specialty batteries. It meets the requirements of Chapter 28 Note 1 as a separate chemically defined compound, and falls under tariff item 2834.21.00 as a nitrate of potassium.
Food Grade Potassium Nitrate
Food grade potassium nitrate is a purified, chemically defined potassium nitrate (KNO3) used as a curing agent (E252) for preserved meats. It is classified under tariff item 2834.21.00 as a nitrate of potassium, and is not considered a food preparation because it is a single chemical compound.
Industrial Potassium Nitrate for Propellants
Industrial potassium nitrate for propellants is a high-density, chemically defined potassium nitrate (KNO3) used as an oxidizer in black powder and propellant production. It is classified under tariff item 2834.21.00 as a pure inorganic compound, and is not considered a finished explosive product.
Laboratory Potassium Nitrate Solution 30%
Laboratory potassium nitrate solution is a 30% aqueous solution of potassium nitrate (KNO3) used for analytical and calibration purposes. It falls under tariff item 2834.21.00 as a solution of a chemically defined compound in water, per Chapter 28 Note 1(b).
Pharmaceutical Grade Potassium Nitrate USP
Pharmaceutical grade potassium nitrate USP is a high-purity, chemically defined potassium nitrate (KNO3) meeting USP standards, used in dental desensitizers and limited pharmaceutical applications. It is classified under tariff item 2834.21.00 as a pure inorganic compound, not a medicament.
Potassium Nitrate Crystals
Potassium nitrate crystals are pure, chemically defined potassium nitrate (KNO3) in crystalline form, used as a fertilizer and in pyrotechnics. It falls under tariff item 2834.21.00 as a nitrate of potassium, distinct from ammonium nitrate or other nitrates.