Calcined Witherite Powder from Mexico
Calcined Witherite Powder is natural barium carbonate ore that has been calcined to remove impurities and ground into powder for glass manufacturing and chemical feedstock. It falls under tariff item 2511.10.00 because chapter note 1 permits calcination for witherite, and the product remains a natural mineral.
Duty Rate — Mexico → Canada
0%
Import Tips
• Note that calcination is explicitly allowed for witherite under chapter note 1, but ensure no further chemical processing occurs
• Provide the calcination temperature and duration to demonstrate it is only for impurity removal
• Check if the glass industry requires a certificate of analysis for barium content