Calcined Ground Witherite for Ceramics from Japan
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.
Duty Rate — Japan → Canada
0%
Import Tips
• 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