HS 251910 Natural magnesium carbonate (magnesite)
Quick Answer: HS Code 251910 covers natural magnesium carbonate, commonly known as magnesite, in its crude, unworked state. This includes both compact and crystalline forms of the mineral. Magnesite is primarily used in the production of refractory materials, magnesium chemicals, and as a source of magnesium metal. For imports into the UK and EU, the Most Favoured Nation (MFN) duty rate is 0.00% ad valorem, meaning it is duty-free. In the United States, the MFN duty rate is $10.33 per tonne, with some specific provisions for duty-free treatment under certain trade agreements. Importers should verify eligibility for preferential tariffs. Given its raw material nature, trade considerations often revolve around supply chain stability and compliance with origin rules for any subsequent processing.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2519100000 | 0.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2519100000 | 0.00 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2519100000 | Free | — | ["t"] |
Duty rates sourced from the USITC (US International Trade Commission) Harmonized Tariff Schedule (HTS) (accessed 2/22/2026), EU TARIC – DG TAXUD (Directorate-General for Taxation and Customs Union) (accessed 2/22/2026), and UK Trade Tariff – HMRC (His Majesty's Revenue and Customs) (accessed 2/22/2026).
Data compiled and presented by HSRates.
How Has Trade Volume Developed?
How to Classify This HS Code?
What products does HS 251910 cover?
This subheading covers natural magnesium carbonate, specifically known as magnesite, in its crude or unworked state. According to the Harmonized System Explanatory Notes (HSENs) for Heading 2519, it encompasses the naturally occurring mineral form of magnesium carbonate (MgCO3). This includes magnesite whether in lumps, powder, or other primary forms, provided it has not undergone further processing beyond crushing, grinding, or screening. Official definitions from the USITC Harmonized Tariff Schedule (HTSUS) and the EU TARIC system align with this scope, emphasizing the natural, uncalcined, and unrefined state of the mineral, distinguishing it from processed magnesium compounds.
What falls outside HS 251910?
The following products are excluded from HS 251910: calcined magnesite (dead-burned or caustic-calcined magnesia), which falls under HS 251990. Magnesite that has been fused, chemically pure magnesium carbonate, or synthetic magnesium carbonate are also excluded, as these are considered manufactured products or refined chemicals, typically classified in Chapter 28. For instance, magnesium oxide (magnesia), whether fused or not, is specifically provided for in HS 251990, even if derived from natural magnesite. Similarly, dolomite, a double carbonate of magnesium and calcium, is classified under HS 2518, not HS 251910, despite containing magnesium carbonate.
What are common classification mistakes for HS 251910?
A common error is misclassifying calcined magnesite (magnesium oxide) under HS 251910 instead of HS 251990. Importers sometimes overlook the crucial distinction between natural magnesium carbonate and its thermally processed form, which has a different chemical composition and end-use. This mistake often arises from a lack of understanding of the manufacturing process or an incomplete product description. Adherence to General Interpretative Rule (GRI) 1, which states that classification is determined according to the terms of the headings and any relative section or chapter notes, is essential here, as Heading 2519 explicitly differentiates between natural magnesium carbonate and other magnesium compounds.
How should importers classify products under HS 251910?
The correct procedure for classifying products under HS 251910 involves verifying that the product is indeed natural, uncalcined magnesium carbonate (magnesite). Importers and customs brokers should obtain a detailed product specification sheet, including the chemical composition and a description of any processing steps. If the material has been subjected to heating that alters its chemical structure to magnesium oxide, it should be classified under HS 251990. Consulting the WCO HS Explanatory Notes for Heading 2519 is crucial, along with reviewing the specific wording of the HTSUS or TARIC subheading. When in doubt, seeking a binding ruling from the relevant customs authority (e.g., CBP in the US) is the most reliable approach to ensure compliance and avoid penalties.
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FAQ
What are the typical import duty rates for Natural Magnesium Carbonate (Magnesite) under HS 2519.10?
The import duty rates for Natural Magnesium Carbonate (Magnesite) under HS 2519.10 can vary significantly by importing country and origin. For example, the United States generally applies a 'Free' duty rate for products classified under HTSUS 2519.10.00. The European Union's TARIC database often shows a 0.00 % ad valorem duty rate for many origins. However, some countries may apply specific duties, such as '$10.33/t' as observed in certain tariff schedules. Importers should always consult the specific tariff schedule of the importing country (e.g., USITC HTSUS, EU TARIC, UK Trade Tariff) for the most accurate and up-to-date duty rates applicable to their specific trade lane.
What are the key classification criteria for Natural Magnesium Carbonate (Magnesite) under HS 2519.10?
The primary classification criterion for HS 2519.10 is that the product must be 'Natural magnesium carbonate (magnesite)'. This heading specifically covers magnesite in its natural state, which is a mineral composed primarily of magnesium carbonate (MgCO3). It typically includes crude, crushed, ground, or powdered forms, provided it has not undergone further processing that would alter its fundamental character as natural magnesite (e.g., calcination to produce magnesia). The WCO Explanatory Notes for Chapter 25 provide further guidance, emphasizing the 'natural' aspect and distinguishing it from chemically pure magnesium carbonate or calcined products.
Are there any preferential duty rates available for HS 2519.10 under common trade agreements?
Yes, preferential duty rates are often available for HS 2519.10 under various Free Trade Agreements (FTAs) and Generalized System of Preferences (GSP) schemes, provided the product meets the respective Rules of Origin. For instance, under agreements like USMCA (United States-Mexico-Canada Agreement) or various EU FTAs (e.g., with South Korea, Japan), eligible magnesite originating from partner countries may qualify for a 0.00 % or 'Free' preferential duty rate. Importers must ensure they have valid Certificates of Origin or origin declarations to claim these preferential rates. Consulting the specific FTA text and the importing country's customs regulations is crucial for eligibility.
What documentation is typically required for importing Natural Magnesium Carbonate (Magnesite) under HS 2519.10?
Standard import documentation for HS 2519.10 includes a commercial invoice, packing list, bill of lading or air waybill, and potentially a certificate of origin if preferential duty rates are being claimed. Depending on the importing country and specific end-use, additional documentation might be required, such as a phytosanitary certificate (though less common for minerals), a chemical analysis report, or a safety data sheet (SDS). Importers should verify specific requirements with their customs broker or the importing country's customs authority, as these can vary.