HS code · 6-digit subheading
HS Code 2519.10 – Magnesium carbonate (magnesite); natural
HS code 2519.10 is the 6-digit subheading for magnesium carbonate (magnesite), natural. It is used for raw magnesite ore, crushed magnesite, magnesite lumps, magnesite powder and refractory-grade magnesite.
What HS 2519.10 covers
This code covers natural magnesium carbonate, commonly known as magnesite, in its raw, unprocessed state. Magnesite is a significant mineral traded globally, primarily as a raw material for producing various magnesium compounds, especially refractory materials. Countries with robust steel, cement, and glass industries are major importers, as they require magnesite for manufacturing refractory bricks and linings that can withstand extreme temperatures. It's also used in the chemical industry for producing magnesium oxide and other magnesium salts. Exporters are typically nations endowed with substantial magnesite deposits, such as China, Russia, and Brazil, which have the mining and initial processing capabilities. Key aspects of its trade include the purity of the ore, its crystalline structure, and the presence of impurities, all of which influence its suitability for different industrial applications. The global demand is closely tied to the health of heavy industries.
- Covers
- Raw magnesite ore
- Crushed magnesite
- Magnesite lumps
- Magnesite powder
- Refractory-grade magnesite
- Chemical-grade magnesite
- Calcination-ready magnesite
- Examples
- RHI Magnesita Raw Magnesite
- Grecian Magnesite
- Magnezit Group Magnesite
- Baymag Magnesite
Codes often confused with 2519.10
Common mistake. This code is often confused with 251990 (magnesia, fused or dead-burned) because both relate to magnesium compounds, but 251910 is the natural carbonate, while 251990 is the processed oxide. It could also be mistaken for certain dolomite products (251810) if the magnesium content is the sole focus, but magnesite is primarily magnesium carbonate.
Top exporters and importers of HS code 251910, 2025
In 2025, the largest exporter of HS code 251910 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.
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 2519.10
Brazil does not split HS 2519.10: its NCM code is 2519.10.00.
All Brazil NCM codes in heading 25.19 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 2519.10
What is HS code 251910?
HS code 251910 is a 6-digit subheading in the Harmonized System that covers: Magnesium carbonate (magnesite); natural. This code covers natural magnesium carbonate, commonly known as magnesite, in its raw, unprocessed state. Magnesite is a significant mineral traded globally, primarily as a raw material for producing various magnesium compounds, especially refractory materials. Countries with robust steel, cement, and glass industries are major importers, as they require magnesite for manufacturing refractory bricks and linings that can withstand extreme temperatures. It's also used in the chemical industry for producing magnesium oxide and other magnesium salts. Exporters are typically nations endowed with substantial magnesite deposits, such as China, Russia, and Brazil, which have the mining and initial processing capabilities. Key aspects of its trade include the purity of the ore, its crystalline structure, and the presence of impurities, all of which influence its suitability for different industrial applications. The global demand is closely tied to the health of heavy industries.
What products fall under HS code 251910?
Raw magnesite ore, Crushed magnesite, Magnesite lumps, Magnesite powder, Refractory-grade magnesite, Chemical-grade magnesite, Calcination-ready magnesite
What are common misclassifications for HS code 251910?
This code is often confused with 251990 (magnesia, fused or dead-burned) because both relate to magnesium compounds, but 251910 is the natural carbonate, while 251990 is the processed oxide. It could also be mistaken for certain dolomite products (251810) if the magnesium content is the sole focus, but magnesite is primarily magnesium carbonate.
Which countries are the top exporters of goods under HS code 251910?
In 2025, the top exporters of HS code 251910 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 goods under HS code 251910?
In 2025, the top importers of HS code 251910 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.
How is HS code 251910 structured?
HS code 251910 is a 6-digit subheading under the Harmonized System. The first 2 digits (25) identify the chapter, digits 3-4 (19) identify the heading, and digits 5-6 (10) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 251910?
In Brazil, HS code 251910 is NCM 2519.10.00. The last two digits are 00 because Brazil does not split this HS code further.