Dunite-Derived Magnesium Oxide
Dunite-derived magnesium oxide is produced by calcining dunite rock (olivine), a natural mineral source, to yield magnesium oxide used in steelmaking and refractories. It is classified under tariff item 2519.90.00 as 'other' magnesium oxide, as it is not fused or dead-burned and the calcination process is within Chapter 25 Note 1 limits.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is uncalcined dunite or olivine in crude form
Uncalcined mineral products may fall under other Chapter 25 headings for natural minerals.
If the product is formed into refractory bricks or shapes after calcination
Articles of magnesia for refractory use are classified in Chapter 68.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Confirm the dunite source is natural and not beneficiated beyond calcination
• Provide a mill certificate or analysis to CBSA showing the magnesium oxide content and processing history
Related Products under Tariff item 2519.90.00
Animal Feed Grade Magnesium Oxide
Coarse magnesium oxide powder formulated for livestock mineral supplements to prevent grass tetany. This product falls under tariff item 2519.90.00 as 'Other' magnesium oxide, suitable for feed but imported in bulk.
Caustic Calcined Magnesia Powder
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.
Caustic Calcined Magnesite 85/15 (MgO/SiO2)
Caustic calcined magnesite blend with 85% MgO and 15% SiO2, used for basic refractory brick production. This product falls under tariff item 2519.90.00 as 'Other' magnesium oxide, specifically caustic calcined magnesite, which is not further processed beyond calcination.
Caustic Calcined Magnesite Powder
Fine powder produced by calcining natural magnesite at moderate temperatures to yield reactive magnesium oxide with some residual CO2. This product is classified under tariff item 2519.90.00 as caustic calcined magnesite, a form of magnesium oxide.
CCM Fines Recovery Dust
Fine dust recovered from caustic calcined magnesite production, classified the same as the primary product. This product falls under tariff item 2519.90.00 as caustic calcined magnesite, regardless of particle size.
Dead-burned Magnesia 0-100mm for Rotary Kilns
Coarse-grained dead-burned magnesia sized 0-100mm, produced by sintering magnesite at high temperatures for use in rotary kiln linings. This product falls under tariff item 2519.90.00 as 'Other' magnesium oxide, specifically dead-burned magnesia, which is not further processed beyond sintering.