U.S. imports of Potassium Chloride (Muriate of Potash) (HS 310420) totaled $248.8M in August 2026, imported from 16 countries.
Last updated: August 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.
7.1K import shipments a month
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.
Subheading 1 of 3 in heading 3104
Subheading 310420 · $248.8M of $262.8M
ImportsExports
Imports
$248.8MYoY · free account
Exports
$79.3MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $3.2B of Potassium Chloride (Muriate of Potash) and exported $1.2B.
Through August 2026. Source: U.S. Census Bureau.
Trade Directory
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 3104200010 | Potassium Chloride Lt=62% by Wt of Potassium Oxide | $158.6M | 0.00% | 0.00% | -- |
| 3104200050 | Potassium Chloride Gt 62% by Wt of Potassium Oxide | $90.1M | 0.0018% | 0.02% | $2K |
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 | $79.3M |
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 · August 2026
origin
Canada and Russia together supply 99% of it.
customs district
destination
entry
rate provision · imports
100.0% enters free of duty; duty collected equals 0.00% of imports for consumption.