Product classification
HS code for Natural magnesium sulfate: 2530.20
Kieserite, epsomite (natural magnesium sulphates).
Classification of natural magnesium sulfate under HS 2530.20
Natural magnesium sulfate, occurring as minerals like kieserite or epsomite, is classified under HS code 2530.20. This code is situated in Chapter 25, which covers salt, sulfur, earths and stone, plastering materials, lime, and cement. The classification is specific to naturally occurring mineral substances that have not been chemically processed beyond what is allowed for Chapter 25, such as washing, grinding, or heat treatment to remove impurities. Kieserite is a magnesium sulfate monohydrate, while epsomite is the heptahydrate form, commonly known as natural Epsom salt. These minerals are often used in agriculture as fertilizers to correct magnesium deficiencies in soil or in various industrial applications. It is crucial to distinguish these natural minerals from chemically synthesized magnesium sulfate. The HS system prioritizes the origin of the substance; if it is mined and remains in its natural mineral state, it stays in Chapter 25.
- Covers
- Natural kieserite
- Natural epsomite
- Crude magnesium sulfate minerals
- Ground natural magnesium sulfate
- Natural Epsom salts (unrefined)
- Magnesium sulfate mineral concentrates
- Also under 2530.20
- K+S Minerals and Agriculture Kieserite
- Compass Minerals Epsomite
- German Kieserite
- Chinese Natural Magnesium Sulphate
Codes often confused with 2530.20
Common mistake. HS code 2530.20 is frequently confused with 2833.21, which covers chemically pure or synthetic magnesium sulfate. If the product has been produced through a chemical reaction or is highly refined to a pharmaceutical grade, it must be classified in Chapter 28. It is also sometimes confused with 3104.90 if sold specifically as a potassic fertilizer blend.
Top exporters and importers of HS 253020 (the code used for natural magnesium sulfate), 2025
In 2025, the largest exporter of HS 253020 (the code used for natural magnesium sulfate) in UN Comtrade data was Germany, with 92% of world exports; the largest importer in UN Comtrade data was Poland, with 20% 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 253020, not only natural magnesium sulfate.
Top exporters 2025 · share of world exports
- 1 Germany $114M 92% of world exports
- 2 China $3.9M 3.2% of world exports
- 3 Belgium $2.2M 1.8% of world exports
World total: $124M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Poland $27M 20% of world imports
- 2 France $23M 17% of world imports
- 3 Belgium $16M 12% of world imports
World total: $135M 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 magnesium sulfate
Brazil classifies natural magnesium sulfate under NCM 2530.20.00: HS 2530.20 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about natural magnesium sulfate
What is the HS code for Natural magnesium sulfate?
The HS code for Natural magnesium sulfate is 253020 (Kieserite, epsomite (natural magnesium sulphates)). The HS code for natural magnesium sulfates like kieserite and epsomite is 2530.20.
How do I classify Natural magnesium sulfate for customs?
Natural magnesium sulfate is classified under HS code 253020 — Kieserite, epsomite (natural magnesium sulphates). This is a 6-digit subheading level code.
Is pharmaceutical-grade Epsom salt classified here?
Generally no; pharmaceutical-grade or highly refined synthetic magnesium sulfate is classified under HS code 2833.21.
Which countries are the top exporters of natural magnesium sulfate (HS 253020)?
In 2025, the top exporters of HS 253020 (the code used for natural magnesium sulfate) in UN Comtrade data were Germany ($114M, 92% of world exports), China ($3.9M) and Belgium ($2.2M). World exports came to about $124M, 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 magnesium sulfate (HS 253020)?
In 2025, the top importers of HS 253020 (the code used for natural magnesium sulfate) in UN Comtrade data were Poland ($27M, 20% of world imports), France ($23M) and Belgium ($16M). World imports came to about $135M, 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 magnesium sulfate the same in all countries?
The base HS code 253020 for Natural magnesium sulfate 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 magnesium sulfate in Brazil?
In Brazil, natural magnesium sulfate (HS 253020) is classified under NCM 2530.20.00.