The U.S. Antimony Trioxide price finished November 2025 at 2.16% down month-on-month, falling for the third straight month. The bearish market followed weaker imports tender from Chinese exporters as concentrate availability improved in Yunnan. The declining ocean freight cost along the Asia–U.S. West Coast route further reduced the U.S. premium to around USD 550/mt against Asian prices, which also contributed to the decline of warehouse prices for antimony trioxide.
Demand from downstream applications for antimony trioxide weakened due to a reduction in production of resin for construction plastics during the seasonal downturn in house completions. The steadying of November building-permit applications caused masterbatch producers in the Carolinas and Ohio to hold off on restocking until first-quarter budgeting. Wire-and-cable producers were operating at a steady rate, but the necessity finished goods inventories limited spot demand. Pigment blenders across the border in Canada and Mexico indicated that they had ample stocks and were not able to respond to re-export demand out of US warehouses. Buyers took advantage of the lower antimony trioxide prices from Asia and lower freight costs to push for discounts.
The indigenous production of Antimony Trioxide was confined to the secondary smelters in Montana and Texas, where production met only a small fraction of the U.S. demand. Feedstock supplies out of China and Mexico have been better as Beijing has relaxed export license paperwork, shortening average transit times through Los Angeles by one week. However, effect on prices was largely through freight- Container rates which have fallen 7% from October, increasing stock levels at the Baltimore and Long Beach warehouses to 3 weeks.
A significant update from Beijing in late November 2025 saw the Chinese government providing a positive update on its antimony trioxide market by raising its almost year-long ban on exports of gallium, germanium, and antimony to the U. S. The 2024 export limits are now lifted – a further step toward thawing trade tensions between the world’s two largest economies – until Nov 2026. However, concentrate shipments from Bolivia to the U.S. did increase slightly, although they were nowhere near the steady tranches coming in from China. Meanwhile, the U.S. Office of Critical Minerals Security also reconfirmed support for domestic antimony projects but offered no timetable for new mine developments, meaning short-term supply outlook remained unchanged. As a result, the supply of feedstock for antimony trioxide was adequate throughout the month.
Looking ahead, stable antimony trioxide import availability and year-end inventory drawdowns are expected to keep seller leverage limited despite steady feedstock costs. With substitution pressures mounting and construction demand subdued, the outlook for Antimony Trioxide in the U.S. remains cautious as the market heads into 2026.
