The US STPP market strengthened through March as seasonal cleaning sector demand and firmer upstream costs supported higher pricing across the West Coast. Importers moved early to secure volumes, while exporters reduced availability to protect margins, tightening supply and reinforcing a bullish tone. Cleaning and food processing applications continued to anchor consumption, with steady operating rates ensuring consistent offtake. Rising freight expenses and stronger phosphoric acid sentiment added to delivered cost pressure, prompting buyers to accept higher offers rather than risk shortages. Supply conditions also contributed, as logistics delays and selective shipment timing limited flexibility and kept the market tight. Although domestic production remained stable, imports continued to shape coastal pricing dynamics. Looking ahead, the market is expected to gradually ease after April as freight conditions improve, inventories build, and upstream costs stabilise.
