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Harmonized System
U.S. imports of potassium chloride (muriate of potash) (HS 310420) totaled $188.6M in July 2026, traded with 15 countries.
Importers of Potassium Chloride (Muriate of Potash) paid $10K in duties in July 2026 — an effective duty rate of 10% on $99K in dutiable value, based on actual customs collections rather than the published tariff schedule. Potassium Chloride (Muriate of Potash) imports of $188.6M in July 2026 ran 31% below the year-to-date monthly average of $273.5M.
Last updated: July 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.
4.8K shipments/mo
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.
HSChapter 31
ImportsExports
Imports
$188.6MYoY · Pro
Exports
$78.6MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
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Subheading 1 of 3 in heading 3104
Subheading 310420 · $188.6M of $197.2M
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 |
|---|---|---|---|---|---|
| 3104200010 | Potassium Chloride Lt=62% by Wt of Potassium Oxide | $109.7M | 0.00% | 0.00% | -- |
| 3104200050 | Potassium Chloride Gt 62% by Wt of Potassium Oxide | $78.9M | 0.01% | 0.13% | $10K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3104200000 | Potassium Chloride | $78.6M |
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.
Imports · July 2026
origin
Canada and Israel together supply 95% of it.
customs district
destination
entry
rate provision · imports
99.7% enters free of duty; the effective duty rate is 0.01%.