Natural magnesium carbonate (magnesite); fused magnesia; dead-burned (sintered) magnesia, whether or not containing small quantities of other oxides added before sintering; other magnesium oxide, whether or not pure
4 declarable lines
Heading 2519 covers natural magnesium carbonate (magnesite), fused magnesia, dead-burned (sintered) magnesia, caustic calcined magnesite, and other magnesium oxide, whether or not pure. It is split first between natural magnesite in 2519.10 and other products in 2519.90, then by product form: fused or dead-burned magnesia, caustic calcined magnesite, and other magnesium oxide. All listed lines carry a general (MFN) rate of Free.
Products in this heading
- Natural magnesite ore
- Natural magnesium carbonate powder
- Dead-burned (sintered) magnesia
- Fused magnesia
- Caustic calcined magnesite
- Magnesium oxide powder, whether or not pure
- Refractory-grade magnesia
How to choose the right subheading
- Decide whether the product is natural magnesium carbonate (magnesite) or a processed magnesia or magnesium oxide product.
- For processed products, decide whether it is fused magnesia or dead-burned (sintered) magnesia.
- Decide whether the product is caustic calcined magnesite.
- If it is none of the named forms, classify it as other magnesium oxide, whether or not pure.
- Check whether small quantities of other oxides were added before sintering; that does not move dead-burned magnesia out of its line.
Often confused with
- Heading 2518Dolomite
Dolomite is a calcium magnesium carbonate mineral and has its own heading.
- Heading 2520Gypsum and anhydrite
These are calcium sulfate minerals, not magnesium carbonate or magnesia.
- Heading 2522Quicklime and slaked lime
Calcium lime products are classified in 2522, not as magnesium oxide.
- Heading 2526Talc and natural steatite
These are magnesium silicate minerals, not magnesium carbonate or magnesia.
- Heading 2511Witherite
Natural barium carbonate is a different mineral from natural magnesium carbonate.
Frequently asked questions
What is the HTS code for natural magnesite?
Natural magnesium carbonate (magnesite) is classified under 2519.10.00.00, with a general (MFN) rate of Free.
What is the duty on fused magnesia?
Fused magnesia is classified under 2519.90.10.00 and has a general (MFN) rate of Free.
How do I classify caustic calcined magnesite?
Caustic calcined magnesite goes under 2519.90.20.00 and has a general (MFN) rate of Free. Other magnesium oxide, whether or not pure, goes under 2519.90.50.00, also Free.
Guide written from the official schedule text. Rates quoted are general (MFN) rates; check the line page for trade agreement rates and the classification of your exact product.