Calcined Colemanite Borate Concentrate from Mexico
Calcined colemanite borate concentrate is a naturally occurring calcium borate mineral processed by heating to remove water, used primarily in glass and ceramic manufacturing. It falls under tariff item 2528.00.00 as a calcined natural borate concentrate.
Duty Rate — Mexico → Canada
0%
Import Tips
• Document the calcination process and ensure no other chemical processing occurred
• Verify the product is not separated from brine
• Keep the H3BO3 content below 85% on dry weight for classification