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HSChapter 31
U.S. exports of fertilizers containing nitrates and phosphates (HS 310551) totaled $1.1M in July 2026.
Fertilizers Containing Nitrates and Phosphates imports of $20K in July 2026 ran 84% below the year-to-date monthly average of $124K.
Last updated: July 2026 dataNitrate-phosphate compound fertilizers — combining nitrogen in nitrate form with phosphorus — occupy a distinct agronomic niche, particularly in European-style farming systems where nitrate-based nitrogen is preferred over urea. All US imports enter under a single line, 3105510000. Senegal is the leading supplier under this heading, an unusual sourcing pattern that reflects specific blending or processing arrangements rather than large-scale domestic consumption. Canada and Italy are secondary sources.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
4 shipments/mo
Heading 310551 specifically covers fertilizers containing nitrates and phosphates — meaning the nitrogen component is in nitrate form. Heading 310559 captures all other nitrogen-phosphorus fertilizer combinations not elsewhere specified, including those where nitrogen is present as ammonium or urea rather than as a nitrate salt.
High-nitrogen nitrate fertilizers may be subject to DHS/ATF reporting requirements under the Chemical Facility Anti-Terrorism Standards (CFATS) or EPA Risk Management Program rules depending on concentration and quantity. Importers handling large volumes should verify whether their specific product formulation triggers any of these thresholds in addition to standard CBP entry requirements.
Subheading 8 of 8 in heading 3105
Subheading 310551 · $20K of $75.9M
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ImportsExports
Imports
$20KYoY · Pro
Exports
$1.1MYoY · 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 |
|---|---|---|---|---|---|
| 3105510000 | Fertilizers Contain Nitrates and Phosphates | $20K | 8.56% | 85.58% | $2K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3105510000 | Fertilizers Contain Nitrates and Phosphates | $1.1M |
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.
Exports · July 2026
destination
Canada and Mexico together take 97% of it.
customs district
origin
entry
rate provision · imports
14.4% enters free of duty; the effective duty rate is 8.56%.