The global antimony pentoxide market was valued at USD 142.5 million in 2025 and is projected to reach USD 204.3 million by 2032, growing at a CAGR of 5.28% over 2025-2032, according to PW Consulting. Antimony pentoxide is a higher-valency antimony oxide used as a flame-retardant synergist and pigment in plastics, electronics and coatings.

Antimony pentoxide serves as a flame-retardant synergist in halogenated polymers such as PVC, wire and cable and textiles, as a catalyst and pigment in electronics and ceramics, and as a fine-powder intermediate for specialty applications. Demand is tied to the expansion of flame-retardant plastics, the growth of wire-and-cable and electronics sectors, and the rising use of antimony-based synergists. Asia-Pacific is the largest and fastest-growing region, supported by extensive PVC, electronics and textile industries in China, India and Southeast Asia.

North America and Europe sustain steady demand in premium flame-retardant and electronics applications. Continued fire-safety growth positions antimony pentoxide as a steadily advancing flame-retardant synergist.