Sodium Sulfate Anhydrous (Salt Cake)
Sodium sulfate anhydrous, also called salt cake, is a white crystalline powder widely used in the glass, paper, and detergent industries as a filler and fluxing agent. It is a separate chemically defined compound of sodium sulfate, not a hydrate, and is classified as 'other' sodium sulphates under tariff item 2833.19.00.
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 |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is a sulfate of a metal other than sodium
Other metal sulphates fall under this alternative item.
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
• Provide the purity percentage and intended use on the commercial invoice to support classification under 2833.19.00
• Ensure the product is free of impurities that might trigger classification elsewhere, such as in Chapter 31 if used as fertilizer
• Check if the goods qualify for any free trade agreement preferential tariff treatment
Related Products under Tariff item 2833.19.00
Sodium Bisulfate Monohydrate
Sodium bisulfate monohydrate (NaHSO4·H2O), also known as niter cake, is an acid salt derived from sodium sulfate. It is used primarily for pH adjustment in swimming pools, as a cleaning agent, and in food processing applications. As a sodium sulfate derivative not elsewhere specified, it falls under tariff item 2833.19.00 for other sodium sulphates.
Sodium Sulfate Decahydrate Technical Grade
Sodium sulfate decahydrate technical grade is a hydrated form of sodium sulfate, often used in heat packs and as a laboratory reagent. It does not meet the specific criteria for Glauber's salt in terms of purity or form, so it is classified as 'other' sodium sulphates under tariff item 2833.19.00. The product is a separate chemically defined compound with added water of crystallization.