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HSChapter 25
U.S. imports of kieserite and epsom salts (natural magnesium sulfate) (HS 253020) totaled $103K in July 2026, traded with 4 countries.
Kieserite and Epsom Salts (Natural Magnesium Sulfate) imports of $103K in July 2026 ran 27% below the year-to-date monthly average of $141K.
Last updated: July 2026 dataNatural magnesium sulfate encompasses two commercially distinct forms: kieserite (monohydrate, MgSO₄·H₂O), used primarily as a slow-release agricultural fertilizer and animal feed supplement, and Epsom salts (heptahydrate, MgSO₄·7H₂O), widely used in personal care, bath products, and horticulture. The US schedule separates these into dedicated 10-digit lines — kieserite (2530201000) and Epsom salts (2530202000) — making the hydration state a classification-critical specification. India leads US imports under this heading, with Germany and China also significant sources.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
4 shipments/mo
The US schedule distinguishes kieserite (2530201000), which is the monohydrate form (MgSO₄·H₂O), from Epsom salts (2530202000), which is the heptahydrate (MgSO₄·7H₂O). Importers must confirm the specific hydrate form with the supplier — typically via a certificate of analysis — because misidentifying the hydration state leads to classification under the wrong line. Synthetic magnesium sulfate produced by chemical reaction rather than mined from natural deposits may not qualify under either line and could fall under Chapter 28.
HTS heading 2530 covers minerals of natural origin extracted from geological deposits. Magnesium sulfate produced synthetically — for example, by reacting magnesium oxide with sulfuric acid — is classified in Chapter 28 as an inorganic chemical rather than here. Importers should obtain documentation from the supplier confirming the product is mined or naturally occurring, not chemically manufactured, to support classification under 253020.
Subheading 3 of 3 in heading 2530
Subheading 253020 · $103K of $9.4M
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ImportsExports
Imports
$103KYoY · Pro
Exports
$12KYoY · Pro
12-mo low · imports
YoY · ProFewer than 6 of the last 12 months reported trade above $500K; the trend chart is not shown for thin series.
Through July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Germany and China together supply 100% of it.
customs district
destination
entry
rate provision · imports
66.7% enters free of duty; the effective duty rate is 8.33%.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2530201000 | Kieserite | $69K | 0.00% | 0.00% | -- |
| 2530202000 | Epsom Salts | $34K | 25.00% | 100.00% | $9K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2530200000 | Kieserite, Epsom Salts (Natural Magnesium Sulfate) | $12K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.