US chlor-alkali markets are wrestling with heightened spot needs against strained inventories, as war in the Mideast Gulf disrupts traditional supply chains and fractures international trade — leaving the US as one of few supply options for global and domestic consumers.
Domestic and global chlor-alkali market participants will convene in San Antonio, Texas, next week for the annual American Fuel and Petrochemical Manufacturers (AFPM) conference seeking supply security after a month of war in the Mideast Gulf upended supply lanes and drove US Gulf coast spot caustic soda export prices to a 17-month high.
US Gulf coast manufacturers are insulated from volatility in global energy costs, positioning themselves as a stable supply option. A slate of integrated producers in Asia declared force majeure on vinyl operations in recent weeks because of feedstock ethylene supply disruptions, reducing chlorine requirements and curbing regional chlor-alkali production.
Meanwhile, spot availability from Europe is dwindling as regional producers undertake planned turnarounds during the second quarter, funneling regional vessel demand to the US Gulf coast for immediate spot requirements.
Heightened offshore demand for US-produced caustic soda and chlorine derivatives is strengthening in tandem with domestic demand from distributors grappling with shrinking imports. All caustic soda imported by the US west coast sailed from Asia last year, and about 96pc of movements to the east coast originated from Europe, census data collected by Global Trade Tracker (GTT) show.
One vessel is on the water to Portland, Oregon, carrying more than 10,000 dry metric tonnes (dmt) of caustic soda from Japan and South Korea for delivery on 3 April, data from vessel tracking service Kpler show.
Total Import estimates for February reached about 14,000 dmt and 13,700 dmt in March, data from vessel tracking service Vortexa show. The US imported about 17,000 dmt in January, 65pc lower than in January 2025, data from GTT show.
US importers and distributors are expected to ramp up railcar purchases from domestic producers for second-quarter volumes following sharply lower imports estimated for the first quarter, sources said. But distributors will need to compete with offshore demand to secure supply, which is contributing to near-term bullishness.
Domestic spot barge prices at the US Gulf coast typically carry a sharp premium over spot exports, with a premium averaging more than $90/dmt back to May 2017, Argus data show. A 27pc surge in US Gulf coast spot export prices compared with before the conflict have outpaced the 8pc increase in barge values during the same four-week window, narrowing the premium domestic sales command over the offshore market to $20/dmt — the thinnest margin since November 2024.
Heightened competition between the domestic and foreign caustic soda markets could underpin further price increases in the near-term, with no clear off-ramp for the war in Iran and supply options dwindling.
