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U.S. imports of ammonium sulfate fertilizer (HS 310221) totaled $11.3M in July 2026, traded with 15 countries.
Ammonium Sulfate Fertilizer imports of $11.3M in July 2026 ran 56% below the year-to-date monthly average of $25.6M.
Last updated: July 2026 dataAmmonium sulfate (21-0-0-24S) is a widely traded nitrogen-sulfur fertilizer valued in agricultural markets where sulfur deficiency limits crop yields, particularly for canola, corn, and small grains. Classified under a single 10-digit line (3102210000), it enters the US primarily from Canada, Belgium, and the Netherlands, with Russia and South Korea also among the leading suppliers. Much of the global supply is a byproduct of caprolactam or coke-oven operations, so production economics differ markedly from purpose-built nitrogen fertilizers. Importers should note that Russian-origin product may be subject to additional trade-remedy measures.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
315 shipments/mo
Subheading 3 of 9 in heading 3102
Subheading 310221 · $11.3M of $196.8M
Ammonium sulfate is classified specifically under HTS 3102210000 as a straight nitrogen fertilizer containing sulfate. It is distinguished from double salts or mixtures of ammonium sulfate (heading 310229) and from urea or ammonium nitrate products. The sulfur content is a key agronomic and classification marker.
Importers should verify current antidumping and countervailing duty orders, as ammonium sulfate from certain origins has been subject to trade-remedy proceedings. Russian-origin product may also face additional measures. A licensed customs broker can confirm the applicable orders at time of entry.
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ImportsExports
Imports
$11.3MYoY · Pro
Exports
$4.0MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
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 |
|---|---|---|---|---|---|
| 3102210000 | Ammonium Sulfate | $11.3M | 0.02% | 0.21% | $2K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3102210000 | Ammonium Sulfate | $4.0M |
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.
Imports · July 2026
origin
Belgium and Canada together supply 96% of it.
customs district
destination
entry
rate provision · imports
99.8% enters free of duty; the effective duty rate is 0.02%.