US caustic potash prices surged by the week ending March 27, 2026, up 4.2% from early March, driven by the ongoing war in Iran. The conflict has disrupted key shipping lanes, including the Strait of Hormuz, increasing global energy and shipping costs, while domestic production faces tighter merchant sentiment. Strong demand from fertilizer blenders and the agrochemical sector ahead of the April–May planting window further supported prices. Although domestic chlor-alkali units remain stable, geopolitical risks and rising costs continue to pressure the market. Analysts expect a near-term stable trend, with potential upside if the war escalates.
