Antimony Trioxide Price Trend and Forecast 2026-2027

The US paid the most for antimony trioxide in Q2 2026: USD 18,085/MT, up 3.0% from USD 17,558 in Q1. The tight antimony metal supply didn't help. Worldwide, the average moved up 3.0%, to USD 17,041/MT from USD 16,545, largely because China's export restrictions on antimony have kept the global supply unusually tight all year. What about H2 2026? We'd expect a global average somewhere in the USD 17,550-19,050/MT range, with the flame-retardant demand and the constrained supply both doing the work.

Antimony trioxide is made by roasting antimony metal, itself smelted from stibnite concentrate, in the presence of air. Its dominant use by a wide margin is as a synergist in flame-retardant formulations, boosting the effectiveness of the halogenated flame retardants in plastics, textiles, and electronics. PET-catalyst applications and specialty pigments pick up smaller slices. Three things move the price more than anything else: China's export policy on antimony, which supplies the large majority of world output, the flame-retardant-sector demand tied to electronics and building-materials manufacturing, and the stibnite mining output.

The export-control story behind this market deserves some context, since it's genuinely reshaped global pricing over the past couple of years. China introduced tighter licensing requirements on antimony and antimony-compound exports, a policy shift that traces back to broader strategic-minerals considerations rather than anything specific to the flame-retardant industry itself. The practical effect has been a steady tightening of supply reaching Western and Japanese buyers, even as Chinese domestic supply has remained comparatively more available. That's created the widening gap between Chinese and import-dependent pricing that shows up clearly in the data below.

For buyers outside China, that policy backdrop has made this one of the more closely watched industrial minerals markets over the past year. Flame-retardant formulators have limited substitution options for antimony trioxide, since the alternatives generally offer weaker performance or carry their own cost and regulatory tradeoffs, which is part of why demand has stayed resilient even as prices have climbed sharply.

Antimony Trioxide Price Forecast for 2026

Supply should stay unusually tight through H2 2026, and that's really the story here more than anything on the demand side. China's tightened export controls on antimony, in place since 2024, have kept the global availability constrained even as the flame-retardant demand from electronics manufacturers keeps climbing. Belgium and the US, both import-dependent, have felt that tightness most acutely.

Whether this tightness persists through the rest of 2026 depends almost entirely on Chinese policy decisions that are hard to forecast from outside the country. Buyers who've secured long-term supply agreements have generally fared better than those relying on spot purchases over the past year, and that dynamic looks likely to continue.

Buyers evaluating alternative flame-retardant chemistries as a hedge against continued tightness should note that most substitutes carry their own performance or regulatory tradeoffs, which is part of why formulators have generally stayed with antimony trioxide despite the sharp price increases of the past two years.

What could push prices even higher? Further tightening of the Chinese export policy, or a stronger-than-expected electronics-manufacturing rebound. What could pull them lower? A relaxation of the export restrictions, or new mine supply coming online outside China.

For the Quarter Ending June 2026

Antimony Trioxide Prices Q2 2026:

• China: USD 15,651/MT
• Belgium: USD 17,157/MT
• United States: USD 18,085/MT
• Japan: USD 17,506/MT

Antimony Trioxide Prices in China

China's antimony trioxide producers saw firm domestic flame-retardant demand this quarter, and the gain came to 3.0%, USD 15,195/MT to USD 15,651. Even with the increase, China stayed well below the import-dependent markets.

Why did the price of Antimony Trioxide change in Q2 2026 in China?

The domestic flame-retardant demand stayed firm, and the antimony metal costs kept climbing right alongside the export-policy tightness.

Antimony Trioxide Prices in Belgium

Belgium climbed 3.0% to USD 17,157/MT, the import-dependent compounding demand staying firm even as the Chinese export supply stayed tight. Compounders there reported longer lead times than usual.

Why did the price of Antimony Trioxide change in Q2 2026 in Belgium?

The Chinese export restrictions kept the import availability tight, and the compounding demand from flame-retardant formulators didn't let up either.

Antimony Trioxide Prices in United States

USD 18,085/MT. That's where the US landed in Q2, up 3.0% from USD 17,558 in Q1. The import dependency kept the premium wide, and the tight Chinese supply pushed things higher still.

Why did the price of Antimony Trioxide change in Q2 2026 in United States?

The import dependency is really the whole story here. Tight Chinese export supply just kept pushing the US premium wider.

Antimony Trioxide Prices in Japan

Japan gained 3.0% to USD 17,506/MT, the established electronics-sector demand continuing to hold steady through the period.

Why did the price of Antimony Trioxide change in Q2 2026 in Japan?

The electronics-sector flame-retardant demand held steady, and the tight regional supply did the rest.

For the Quarter Ending March 2026

Antimony Trioxide Prices Q1 2026:

• China: USD 15,195/MT
• Belgium: USD 16,657/MT
• United States: USD 17,558/MT
• Japan: USD 16,996/MT

Antimony Trioxide Prices in China

China gained 3.0% to USD 15,195/MT, the domestic demand firming as the year opened.

Why did the price of Antimony Trioxide change in Q1 2026 in China?

The domestic flame-retardant demand firmed as the year opened, and the antimony metal costs edged higher right alongside it.

Antimony Trioxide Prices in Belgium

Belgium rose 3.0% to USD 16,657/MT, the import availability tightening further as the year began.

Why did the price of Antimony Trioxide change in Q1 2026 in Belgium?

The import availability tightened further as the year began, squeezed by the continued Chinese export restrictions.

Antimony Trioxide Prices in United States

US antimony trioxide climbed 3.0% to USD 17,558/MT, the import-dependent demand staying firm through the quarter.

Why did the price of Antimony Trioxide change in Q1 2026 in United States?

The import-dependent demand stayed firm, and the tight global supply kept pushing the premium wider.

Antimony Trioxide Prices in Japan

Japan gained 3.0% to USD 16,996/MT, the electronics-sector demand building through the quarter.

Why did the price of Antimony Trioxide change in Q1 2026 in Japan?

The electronics-sector demand built through the quarter, tracking the regional manufacturing activity closely.

Quarterly Antimony Trioxide Price Trends

The global average climbed steadily across the window, from USD 14,700/MT in Q1 2025 to USD 17,041 by Q2 2026, a net gain of about 15.9%. That's a considerably sharper climb than most industrial chemicals post over the same stretch, and China's tightened export controls on antimony, in place since 2024, explain most of it. Every single quarter in the window posted a gain of roughly 3.0%, an unusually consistent pace for a market driven so heavily by policy.

What was Antimony Trioxide Price in 2025?

2025 was a sharply firming year for antimony trioxide, and it set the tone for what's continued into 2026. Starting near USD 14,700/MT in Q1, the global average finished 2025 at USD 16,063, a gain of about 9.3%. China's export restrictions on antimony, tightened through the year, explain the bulk of the climb, and every one of the four regions we track posted a remarkably similar percentage gain.

Antimony Trioxide Prices in China in 2025

Chinese prices moved from about USD 13,500/MT in Q1 2025 to USD 14,752 by Q4, up roughly 9.3%. The domestic demand held firm all year, and China stayed the most affordable of the four markets even as the export policy tightened around it.

Antimony Trioxide Prices in Belgium in 2025

Belgian prices climbed from USD 14,800/MT in Q1 to USD 16,172 by Q4, a 9.3% gain, as the import-dependent compounding demand met increasingly constrained supply.

Antimony Trioxide Prices in United States in 2025

US prices rose from USD 15,600/MT in Q1 to USD 17,047 by Q4, up 9.3%, the highest absolute price throughout the four markets on the steep import dependency.

Antimony Trioxide Prices in Japan in 2025

Japanese prices moved from USD 15,100/MT in Q1 to USD 16,501 by Q4, a 9.3% gain, as the electronics-sector demand stayed firm against the tightening global supply.

How We Can Help

Expert Market Research: Your Source for Real-Time Antimony Trioxide Price Intelligence

We keep a continuous eye on the antimony trioxide prices wherever it's produced or consumed at scale, tracing causation through the Chinese export policy, the flame-retardant-sector demand, and the stibnite mining output. Our analysts monitor Chinese regulatory announcements especially closely given how directly they've been driving this market over the past two years, and we revisit each of the four markets covered here every month. Need pricing data, bespoke market analysis, or procurement advisory? Reach out to our team.