The global zinc borate market was valued at USD 580.0 million in 2025 and is projected to grow from USD 592.1 million in 2026 to USD 982.0 million by 2034, at a CAGR of 6.5% during the forecast period, according to Fortune Business Insights. Zinc borate is an inorganic boron-zinc compound used as a flame retardant, smoke suppressant, char promoter and anti-dripping additive in PVC, polymers, rubber, textiles and coatings.

Zinc borate functions as a halogen-compatible flame-retardant synergist and smoke suppressor in flexible and rigid PVC and other halogenated polymers, promoting char formation and reducing smoke and carbon monoxide release during combustion, while also providing corrosion-control and fungicidal properties. Demand is tied to rising fire-safety and smoke-regulation standards in construction, wire and cable and transportation, and the expansion of flame-retardant polymer formulations. Asia-Pacific dominates the market, supported by extensive PVC, wire-and-cable and construction industries in China, India and Southeast Asia.

Europe and North America sustain steady demand in premium flame-retardant and safety-critical applications. Continued fire-safety and polymer growth positions zinc borate as a steadily advancing flame-retardant and PVC auxiliary.