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HSChapter 28
U.S. imports of potassium nitrate (HS 283421) totaled $3.2M in April 2026, traded with 14 countries.
Potassium Nitrate imports of $3.2M in April 2026 ran 53% below the year-to-date monthly average of $6.8M.
Last updated: April 2026 dataPotassium nitrate—historically known as saltpeter—functions as a fertilizer component, a heat-transfer medium in solar energy systems, and an oxidizer in pyrotechnic and specialty glass applications. Chile dominates US import supply under this heading, reflecting its established nitrate-mining and chemical industry, with Israel and Germany also notable sources. The single tariff line 2834210000 covers all potassium nitrate regardless of grade, but importers of fertilizer-grade material should be aware of applicable EPA and state-level reporting requirements for oxidizing substances.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Chile possesses extensive natural caliche nitrate deposits and has developed significant downstream processing capacity, giving it a structural cost advantage in potassium nitrate production. The US-Chile Free Trade Agreement may also affect duty treatment for qualifying shipments.
Yes. Potassium nitrate is classified as an oxidizer under DOT hazardous materials regulations, requiring proper labeling, packaging, and shipping documentation (including a hazardous materials declaration). These requirements apply regardless of the customs classification and must be addressed before the cargo is tendered to a carrier.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2834210000 | POTASSIUM NITRATES | $3.2M | 10.01% | $455 |
POTASSIUM NITRATES
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2834210000 | POTASSIUM NITRATES | $1.2M |
POTASSIUM NITRATES
1.5K t
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
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NEWARK, NJ | $929K | -- | -$929K |
| LOS ANGELES, CA | $781K | $11K | -$770K |
| BUFFALO-NIAGARA FALLS, NY | $123K | $383K | +$261K |