Product classification
HS code for Kieserite: 2530.20
Kieserite, epsomite (natural magnesium sulphates).
Classification of kieserite under HS 2530.20
Kieserite is classified under HS code 2530.20 because it is a naturally occurring mineral substance, specifically a hydrated magnesium sulfate. According to the General Rules of Interpretation (GRI) and the Chapter 25 notes, this heading covers mineral products in their natural state or those that have been washed, crushed, ground, or screened, provided they have not been chemically modified. Kieserite (magnesium sulfate monohydrate) and epsomite (natural magnesium sulfate heptahydrate) are specifically named in this subheading. The classification is determined by the mineralogical identity of the product rather than its intended use. While kieserite is frequently used as a fertilizer in the agricultural sector to provide magnesium and sulfur to crops, it remains in Chapter 25 as long as it is a natural mineral. If the product were chemically synthesized or presented in specific tablets or similar forms for retail sale as a fertilizer, the classification would shift to Chapter 31. However, bulk natural kieserite is strictly maintained under 2530.20.
- Covers
- Natural kieserite (magnesium sulfate monohydrate)
- Natural epsomite (magnesium sulfate heptahydrate)
- Crushed or ground natural magnesium sulfates
- Washed natural magnesium sulfate minerals
- 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. Kieserite is often confused with HS code 2833.21, which covers magnesium sulfate that has been chemically synthesized or highly purified. The distinction lies in whether the product is a natural mineral (Chapter 25) or a chemical compound (Chapter 28). Additionally, it may be misclassified under 3104.20 or 3104.90 if it is perceived solely as a potassium or mineral fertilizer, but 2530.20 is the more specific code for the natural mineral form.
Top exporters and importers of HS 253020 (the code used for kieserite), 2025
In 2025, the largest exporter of HS 253020 (the code used for kieserite) 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 kieserite.
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 kieserite
Brazil classifies kieserite 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 kieserite
What is the HS code for Kieserite?
The HS code for Kieserite is 253020 (Kieserite, epsomite (natural magnesium sulphates)). The HS code for natural Kieserite is 2530.20, which covers natural magnesium sulfates.
How do I classify Kieserite for customs?
Kieserite is classified under HS code 253020 — Kieserite, epsomite (natural magnesium sulphates). This is a 6-digit subheading level code.
Is Kieserite classified as a fertilizer in HS code 3105?
No, natural Kieserite is classified in Chapter 25. It only moves to Chapter 31 if it is put up in specific retail packings or forms as a fertilizer.
Which countries are the top exporters of kieserite (HS 253020)?
In 2025, the top exporters of HS 253020 (the code used for kieserite) 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 kieserite (HS 253020)?
In 2025, the top importers of HS 253020 (the code used for kieserite) 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 Kieserite the same in all countries?
The base HS code 253020 for Kieserite 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 kieserite in Brazil?
In Brazil, kieserite (HS 253020) is classified under NCM 2530.20.00.