U.S. imports of Ammonium Sulfate Fertilizer (HS 310221) totaled $16.2M in August 2026, imported from 16 countries.
Ammonium Sulfate Fertilizer imports of $16.2M in August 2026 ran 34% below the year-to-date monthly average of $24.4M.
Last updated: August 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.
334 import shipments a month
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.
Subheading 3 of 9 in heading 3102
Subheading 310221 · $16.2M of $177.1M
Trade Directory
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share |
|---|---|---|---|---|
| 3102210000 | Ammonium Sulfate | $16.2M | 0.00% | 0.00% |
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 | $7.2M |
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.
ImportsExports
Imports
$16.2MYoY · free account
Exports
$7.2MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $274.1M of Ammonium Sulfate Fertilizer and exported $99.6M.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
Belgium and Canada together supply 96% of it.
customs district
destination
entry
rate provision · imports
100.0% enters free of duty; duty collected equals 0.00% of imports for consumption.