Calcined Ground Witherite for Ceramics
Lightly calcined and ground natural witherite (barium carbonate) for ceramic glazes and frits. The calcination is not to barium oxide, so it remains under heading 25.11, and the product is not subjected to processing beyond that allowed by Chapter 25 Note 1.
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 witherite is calcined to barium oxide
Barium oxide is excluded from Chapter 25 and falls under heading 28.16.
If the product is mixed with other chemical additives
Mixtures for specific uses are classified in Chapter 38.
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 calcination temperature is controlled to avoid conversion to barium oxide, which would be classified in Chapter 28
• Provide a certificate of analysis showing barium carbonate content
• Check if the product is mixed with other minerals, which would change classification
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