Product classification
HS code for Natural magnesite: 2519.10
Magnesium carbonate (magnesite), natural.
Classification of natural magnesite under HS 2519.10
Natural magnesite, or magnesium carbonate, is classified under HS code 2519.10. This classification falls within Chapter 25, which covers mineral products in their crude or minimally processed state. Heading 2519 specifically deals with magnesium carbonate (magnesite) and various forms of magnesia. The subheading 2519.10 is reserved for the natural mineral form of magnesium carbonate. This includes the mineral as it is found in nature, potentially having undergone basic physical processes like crushing, grinding, or washing to remove impurities, provided these processes do not alter the chemical structure of the mineral. The classification is strictly for the carbonate form (MgCO3) rather than the oxide form (MgO). Under the General Rules of Interpretation, specifically GRI 1, the product must meet the description of natural magnesium carbonate. If the material is chemically precipitated magnesium carbonate, it is excluded from Chapter 25 and must be classified in Chapter 28. The purity of the natural magnesite can vary, but as long as it is a naturally occurring mineral and has not been calcined (heated to high temperatures), it remains under 2519.10. This material is a primary source for the production of magnesium metal and various refractory materials used in steelmaking.
- Covers
- Crude natural magnesite ore
- Natural magnesium carbonate rocks
- Crushed or screened natural magnesite
- Washed natural magnesite concentrates
- Lump magnesite for industrial use
- Also under 2519.10
- RHI Magnesita Raw Magnesite
- Grecian Magnesite
- Magnezit Group Magnesite
- Baymag Magnesite
Codes often confused with 2519.10
Common mistake. Natural magnesite is most commonly misclassified under HS code 2519.90. This subheading covers "other" forms of magnesia, including fused magnesia, dead-burned (sintered) magnesia, and caustic-calcined magnesia. These are products that have undergone significant thermal processing. Another common error is using HS code 2836.99 for precipitated magnesium carbonate, which is a chemically manufactured product. Importers must distinguish between the raw mineral (2519.10) and the processed oxide (2519.90).
Top exporters and importers of HS 251910 (the code used for natural magnesite), 2025
In 2025, the largest exporter of HS 251910 (the code used for natural magnesite) in UN Comtrade data was China, with 42% of world exports; the largest importer in UN Comtrade data was Indonesia, with 22% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 251910, not only natural magnesite.
Top exporters 2025 · share of world exports
- 1 China $32M 42% of world exports
- 2 Spain $15M 20% of world exports
- 3 Türkiye $7.7M 10% of world exports
World total: $75M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Indonesia $21M 22% of world imports
- 2 Japan $20M 20% of world imports
- 3 Ecuador $5.1M 5.1% of world imports
World total: $100M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for natural magnesite
Brazil classifies natural magnesite under NCM 2519.10.00: HS 2519.10 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about natural magnesite
What is the HS code for Natural magnesite?
The HS code for Natural magnesite is 251910 (Magnesium carbonate (magnesite); natural). The HS code for natural magnesium carbonate (magnesite) is 2519.10.
How do I classify Natural magnesite for customs?
Natural magnesite is classified under HS code 251910 — Magnesium carbonate (magnesite); natural. This is a 6-digit subheading level code.
What is the difference between 2519.10 and 2519.90?
2519.10 is for the raw, natural mineral (carbonate), while 2519.90 is for processed magnesia (oxide) that has been fused or dead-burned at high temperatures.
Which countries are the top exporters of natural magnesite (HS 251910)?
In 2025, the top exporters of HS 251910 (the code used for natural magnesite) in UN Comtrade data were China ($32M, 42% of world exports), Spain ($15M) and Türkiye ($7.7M). World exports came to about $75M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of natural magnesite (HS 251910)?
In 2025, the top importers of HS 251910 (the code used for natural magnesite) in UN Comtrade data were Indonesia ($21M, 22% of world imports), Japan ($20M) and Ecuador ($5.1M). World imports came to about $100M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Natural magnesite the same in all countries?
The base HS code 251910 for Natural magnesite is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for natural magnesite in Brazil?
In Brazil, natural magnesite (HS 251910) is classified under NCM 2519.10.00.