Caustic Calcined Magnesia Powder from Mexico
Caustic calcined magnesia is magnesium oxide produced by low-temperature calcination of magnesite, yielding a reactive powder used in chemical and fertilizer industries. It falls under tariff item 2519.90.00 as 'other' magnesium oxide, since it is not fused or dead-burned and undergoes only calcination, a process permitted by Chapter 25 Note 1.
Duty Rate — Mexico → Canada
0%
Import Tips
• Ensure the magnesia is not roasted or sintered beyond calcination, as further processing may shift classification
• Keep supplier documentation showing the calcination temperature and natural magnesite origin for CBSA verification