Loading...
U.S. imports of double salts & mixtures of ammonium sulfate (nesoi) (HS 310229) totaled $237K in July 2026, traded with 5 countries.
Double Salts & Mixtures of Ammonium Sulfate (NESOI) imports of $237K in July 2026 ran 51% above the year-to-date monthly average of $156K.
Last updated: July 2026 dataFertilizer products that combine ammonium sulfate with other salts or carriers — but do not fit the pure ammonium sulfate heading — fall under 3102290000 as double salts and mixtures not elsewhere specified. Germany and the Netherlands are the leading US suppliers, reflecting Europe's advanced specialty-fertilizer manufacturing base. These blended or co-crystallized products are often formulated to improve handling characteristics or nutrient release profiles compared with straight ammonium sulfate. Correct classification hinges on whether the product is a true double salt (co-crystallized) versus a mechanical mixture, a distinction customs examiners may scrutinize.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
13 shipments/mo
A double salt is a chemically distinct compound formed by co-crystallization of two salts (e.g., ammonium magnesium sulfate), while a mixture is a physical blend of separate components. Customs authorities may request laboratory analysis or a certificate of composition to confirm which category applies, as the distinction affects the correct 10-digit classification.
Both countries host large integrated chemical and fertilizer complexes with the technical capacity to produce co-crystallized double salts and precision-blended fertilizer products. Their proximity to major European ports also supports cost-competitive bulk ocean freight to US Gulf and East Coast terminals.
HSChapter 31
Subheading 9 of 9 in heading 3102
Subheading 310229 · $237K of $196.8M
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 |
|---|---|---|---|---|
| 3102290000 | Double Salts & Mixtures of Ammonium Sulfate, NESOI | $237K | 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 |
|---|---|---|
| 3102290000 | Double Salts & Mixtures of Ammonium Sulfate, NESOI | $16K |
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.
Supplier Network
Get discovered by U.S. importers searching for HS 310229 — Double Salts & Mixtures of Ammonium Sulfate (NESOI). Be the first supplier listed.
ImportsExports
Imports
$237KYoY · Pro
Exports
$16KYoY · 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 Netherlands together supply 86% of it.
customs district
destination
entry
rate provision · imports
100.0% enters free of duty; the effective duty rate is 0.00%.