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HSChapter 28
U.S. imports of magnesium sulfate (HS 283321) totaled $1.5M in April 2026, traded with 18 countries.
Importers of Magnesium Sulfate paid $136K in duties in April 2026 — an effective duty rate of 10% on $1.3M in dutiable value, based on actual customs collections rather than the published tariff schedule. Magnesium Sulfate imports of $1.5M in April 2026 ran 13% above the year-to-date monthly average of $1.4M.
Last updated: April 2026 dataMagnesium sulfate heptahydrate — widely recognized in commerce as Epsom salt — and its anhydrous and monohydrate forms are all classified under the single US tariff line 2833210000. China dominates US imports by a wide margin, reflecting large-scale natural mineral extraction and chemical processing capacity; Japan and Germany supply higher-purity or specialty grades. End uses span agriculture (as a magnesium and sulfur fertilizer), pharmaceuticals, food processing, and industrial applications including fireproofing and textile dyeing.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
No — all grades of magnesium sulfate are classified under 2833210000 regardless of purity or intended use. However, USP or food-grade material intended for pharmaceutical or food applications may require FDA compliance documentation, while agricultural-grade material used as a fertilizer is subject to different end-use labeling requirements. Classification is the same; regulatory treatment at entry differs.
High supplier concentration in China creates exposure to Section 301 tariff measures and potential supply disruptions. Importers relying heavily on Chinese-origin magnesium sulfate should assess whether alternative suppliers in Japan, Germany, or other markets can meet their purity and volume requirements, and factor in the cost differential when evaluating sourcing strategy.
Monthly import values over time
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HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2833210000 | MAGNESIUM SULFATE | $1.5M | 10.25% | $136K |
MAGNESIUM SULFATE
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2833210000 | MAGNESIUM SULFATE | $604K |
MAGNESIUM SULFATE
875.9K kg
URANIUM ENRICHED IN U235 ETC. PLUTONIUM ETC.
HS 284420
NATURAL URANIUM & COMPOUNDS, ALLOYS & CERAMICS ETC
HS 284410
ANHYDROUS AMMONIA
HS 281410
ALLOYS, DISPERSIONS,ISOTOPES & COMPOUNDS NES
HS 284443
SILICON, UNDER 99.99% (BY WEIGHT) SILICON
HS 280469
PHOSPHORIC ACID AND POLYPHOSPHORIC ACIDS
HS 280920
| State | Imports | Exports | Balance |
|---|---|---|---|
| California | $179K | $56K | -$124K |
| Washington | $85K | $118K | +$33K |
| Ohio | $191K | -- | -$191K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NEWARK, NJ | $280K | -- | -$280K |
| DETROIT, MI | $5K | $209K | +$204K |
| NORFOLK-NEWPORT NEWS, VA | $209K | -- | -$209K |