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HSChapter 31
U.S. imports of potassium chloride (muriate of potash) (HS 310420) totaled $377.9M in April 2026, traded with 15 countries.
Importers of Potassium Chloride (Muriate of Potash) paid $7K in duties in April 2026 — an effective duty rate of 10% on $69K in dutiable value, based on actual customs collections rather than the published tariff schedule. Potassium Chloride (Muriate of Potash) imports of $377.9M in April 2026 ran 19% above the year-to-date monthly average of $318.6M.
Last updated: April 2026 dataPotassium chloride — widely traded in the agricultural sector as muriate of potash (MOP) — is graded by potassium oxide (K₂O) content, and the US tariff schedule reflects this: 3104200010 covers material at or below 62% K₂O by weight, while 3104200050 covers higher-grade product above that threshold. Canada dominates supply, with its vast Saskatchewan potash deposits making it the structurally dominant source for US buyers. Russia and Israel are secondary suppliers, though geopolitical factors have periodically disrupted Russian availability and prompted buyers to reassess concentration risk.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The 62% K₂O breakpoint distinguishes standard-grade MOP (3104200010) from higher-purity or granular industrial-grade product (3104200050). The grade affects not only classification but also pricing benchmarks, as higher-K₂O material commands a premium in both agricultural and industrial markets.
Yes — Canada is a USMCA partner, so qualifying Canadian-origin potassium chloride is generally eligible for USMCA preferential tariff treatment, provided the goods meet the applicable rules of origin and the importer files a valid USMCA claim.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| CANADA | $359.0M | $450K | -$358.5M |
| BRAZIL | $7K | $81.6M | +$81.6M |
| CHINA | -- | $47.6M | +$47.6M |
| JAPAN | $81K | $11.2M | +$11.2M |
| KOREA, SOUTH | -- | $10.6M | +$10.6M |
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 |
|---|---|---|---|---|
| 3104200050 | POTASSIUM CHLORIDE GT 62% BY WT OF POTASSIUM OXIDE | $227.1M | 10.00% | $7K |
| 3104200010 | POTASSIUM CHLORIDE LT=62% BY WT OF POTASSIUM OXIDE | $150.8M | 10.00% | $434 |
POTASSIUM CHLORIDE GT 62% BY WT OF POTASSIUM OXIDE
POTASSIUM CHLORIDE LT=62% BY WT OF POTASSIUM OXIDE
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3104200000 | POTASSIUM CHLORIDE | $185.7M |
POTASSIUM CHLORIDE
589.4K t
UREA, WHETHER OR NOT IN AQUEOUS SOLUTION
HS 310210
MIXTURES OF UREA AND AMMONIUM NITRATE IN SOLUTION
HS 310280
AMMONIUM SULFATE
HS 310221
AMMONIUM DIHYDROGENORTHOPHOSPHATE
HS 310540
SUPERPHOSPHATES CONT 35% OR MORE P2O5
HS 310311
AMMONIUM NITRATE, WHETHER/NOT IN AQUEOUS SOLUTION
HS 310230
| Port | Imports | Exports | Balance |
|---|---|---|---|
| EASTPORT, ID | $146.1M | $76K | -$146.0M |
| PORTLAND, OR | -- | $137.0M | +$137.0M |
| INTERNATIONAL FALLS-RANIER, MN | $115.6M | -- | -$115.6M |