U.S. sulphuric acid markets closed March with a bullish tilt as seasonal fertilizer demand tightened supply channels. Early-month purchases by phosphate fertilizer producers and distributor restocking set the tone, while shipping frictions reinforced upside momentum. Steady sulfur feedstock flows and stable energy costs helped cap sulphuric acid production cost, with tank inventories ample to moderate extremes. Overall, conditions shifted from a largely steady start to a sustained rally by month-end, led by agriculture procurement and import timing in a tense shipping environment. Sulphuric acid demand from agriculture/phosphate fertilizer sectors supported DAP and MAP production and distributor replenishment ahead of spring application. The shift was evident in marked weekly gains through March, with sentiment lifting as inventories tightened and import risk rose. Supply dynamics were mixed: uninterrupted sulfur feedstock to Gulf Coast smelters and steady power and gas costs supported sulphuric acid productioncost, while mid-month logistics bottlenecks and a force majeure outage trimmed near-term availability.
