The global antimony trisulfide market was valued at USD 103.5 million in 2024 and is projected to reach USD 149.8 million by 2032, growing at a CAGR of 4.5% during the forecast period, according to 24ChemicalResearch. Antimony trisulfide (Sb2S3) is an antimony sulfide compound used as a flame-retardant synergist and pigment in PVC, rubber, glass, explosives and specialty applications.

Antimony trisulfide serves as a flame-retardant synergist in PVC and rubber compounds, as a yellow pigment in paints and plastics, and in glass, pyrotechnics and specialty applications. Demand is tied to the expansion of flame-retardant polymers, the growth of antimony-based synergists with halogenated systems, and the rising use of antimony sulfide in industrial applications. Asia-Pacific is the largest region, supported by extensive PVC, rubber and chemical industries in China, India and Southeast Asia.

North America and Europe sustain steady demand in premium flame-retardant and specialty applications. Continued flame-retardant growth positions antimony trisulfide as a steadily advancing antimony sulfide additive.