Witherite Ceramic Flux from United States
Calcined witherite prepared as a fluxing agent for ceramic bodies and glazes, lowering melting temperatures. This product retains its natural barium carbonate composition and is classified under tariff item 2511.20.00, as calcination is permitted and it is not excluded by Chapter 25 notes.
Duty Rate — United States → Canada
0%
Import Tips
• Verify the product is not mixed with other fluxing agents, as that would change classification
• Provide evidence that the calcination does not produce barium oxide
• Ensure the product is not specifically prepared for a single use, which could exclude it from Chapter 25