"Antimony demand is growing" is a true but useless statement for procurement planning. The useful question is: which downstream sector's volume is locked into multi-year contracts, which is cyclical, and which is small-but-fast-growing? Per Roskill and Project Blue annual analyses, antimony's ~85,000–95,000 t/yr global consumption splits roughly 50–60% flame retardants, ~15% lead-acid batteries, ~15–20% defence, and the balance in glass clarifiers, plastics catalysts, and specialty semiconductors. Each segment moves on different drivers, and the procurement team that understands the mix is the one that doesn't get caught between contracts.
Flame Retardants — 50–60% of Demand, Regulation-Driven
Antimony trioxide (Sb₂O₃, CAS 1309-64-4) is the dominant synergist in halogenated flame retardant systems — used at 2–5% loading alongside brominated or chlorinated FR additives in plastics, textiles, cable insulation, electronics housings, and construction materials. End-customer demand tracks fire-safety regulation. The EU's updated Construction Products Regulation (CPR, Regulation 305/2011 with amendments through Regulation 2024/3110), US revised UL 94 specifications, and Asian fire-safety standards (China GB 8624 series for building materials) all tighten over time, pulling FR demand up by 3–4% annually.
FR demand is multi-year contracted into compounders (LANXESS, Albemarle, ICL, J.M. Huber). Material substitution to aluminium or magnesium hydroxide is possible but requires 2–4× loading and full polymer requalification — substitution windows run 6–12 months. So compounders absorb price shocks rather than switching.
Lead-Acid Batteries — 15% of Demand, Stable but Often Misunderstood
Antimony-lead alloys are used in battery grid plates to improve mechanical strength and charge-discharge cycling. SLI (starting-lighting-ignition) batteries for ICE vehicles, motive-power batteries (forklifts, AGVs), stationary back-up batteries (telecom, UPS), and the 12V auxiliary battery in every EV all use antimony-lead grids. The common procurement-side misconception is that EV adoption kills antimony battery demand; reality is more stable because (1) ICE vehicle fleet is still growing in emerging markets, (2) 12V EV auxiliaries remain lead-acid, and (3) stationary applications grow with data-centre buildout.
Defence — 15–20% and Growing Fastest
Antimony trisulphide (Sb₂S₃) is used in tracer ammunition, primers, armour-piercing incendiary rounds, and infrared-decoy flares. Antimony-lead alloys harden small-arms ammunition. NATO ammunition production has stepped up since 2022, with multi-year procurement commitments through at least 2030. US Defense Logistics Agency (DLA) National Defense Stockpile holds antimony with FY24 acquisition authorisations disclosed publicly. The defence segment grew from ~8% of demand in 2022 to ~15–20% by 2026 — the fastest-growing share by a meaningful margin.
Specialty Semiconductors — Small, High-Value, Fast-Growing
III-V semiconductor compounds (InSb indium antimonide, GaSb gallium antimonide) are used in mid-wave and long-wave infrared detectors, Hall-effect sensors, laser diodes, and thermal imaging. Aerospace and defence electronics (FLIR-style imagers, missile seekers, night-vision) and emerging autonomous-vehicle and industrial-automation sensors drive 8–10% annual demand growth in this segment. Absolute volumes are small (under 5,000 t/yr globally) but pricing per kg is multiples of metal-grade antimony.
Plastics Catalysts and Glass Clarifiers — Stable Baseline
Antimony trioxide and antimony pentoxide are used as catalysts in PET (polyethylene terephthalate) bottle and fibre production. Antimony oxides also serve as fining agents in optical and specialty glass. These applications are mature, low-growth, and contracted into specific industrial buyers (Indorama, Reliance, JBF for PET catalysts).
Where the Antimony-Demand Pitch Misreads
- Stating demand-share percentages without a year and a source. "60% flame retardants" was true in 2018; closer to 50% in 2026 as defence has grown. Roskill, Project Blue, and USGS publish updated splits annually.
- Equating "antimony demand" with "antimony trioxide demand." Antimony metal, antimony ore, and antimony trioxide are separate products with separate demand profiles.
- Assuming EVs reduce antimony demand. Lead-acid battery demand is structurally stable; the 12V EV auxiliary keeps the segment alive.
- Claiming "substitution will solve the FR problem." Aluminium hydroxide and magnesium hydroxide can replace Sb₂O₃ in some systems with 2–4× loading and 6–12 month requalification — not a quick fix.
- Citing "$6 billion in US ammunition procurement" or similar headline numbers without citing the specific DOD budget document and fiscal year. Defence appropriations vary year on year.
- Extrapolating the semiconductor segment growth. 8–10% on a small base is meaningful but doesn't reset the overall demand picture.
What This Means for Procurement
For FR-segment compounders, the procurement question is forward contract length — multi-year contracts at the current elevated price level lock in cost certainty against further upside. For defence-segment buyers, multi-year DOD procurement commitments provide demand visibility. For PET-segment catalyst buyers, pricing is contracted with formulae linking to the Sb₂O₃ index. For specialty-semiconductor buyers, the procurement is bilateral and quality-spec-driven, not index-driven.
Demand is only half the equation — the supply-side reasons this demand can't be met sit in the ore geology and mining economics. For each segment, the non-Chinese supply alternatives determine procurement optionality through 2030.
Next step: Browse our antimony ore (5–35% Sb run-of-mine) and antimony concentrates (35–55% Sb flotation product), or discuss segment-specific procurement with the Minerals & Mining division — Sb₂O₃ (flame-retardant grade), antimony metal/ingot, and ore concentrate sourcing options.
Additional Market Context
The USGS Mineral Commodity Summaries 2026 (antimony chapter) is the foundational reference for production and consumption data. Fastmarkets MB publishes the Western antimony benchmark (Rotterdam in-warehouse) and Asian Metal covers the China-domestic price; Argus Metals International provides parallel coverage. China's MOFCOM Announcement No. 33 of 2024 export-licence regime is documented on the MOFCOM website. The US DLA Strategic Materials portal discloses National Defense Stockpile holdings and acquisition authorisations. EU CRMA Regulation 2024/1252 codifies antimony's strategic-mineral status.
For procurement teams tracking antimony specifically, the Perpetua Resources (NASDAQ: PPTA) Stibnite Gold project disclosures, Larvotto Resources' Hillgrove project updates, and Mandalay Resources Costerfield production reports form the non-Chinese supply pipeline monitoring set. Each operator publishes quarterly updates that inform forward-supply expectations.
Last reviewed: 2026-05-16. Demand-share figures are from Roskill / Project Blue annual analyses; verify against current-year reports for specific procurement planning.
