The global aluminum hydroxide flame retardant market was valued at USD 437 million in 2025 and is projected to reach USD 820 million by 2035, at a CAGR of 6.5% over the 2027-2035 forecast period, according to Market Research Intellect. Aluminum hydroxide (ATH) is an inorganic flame retardant and smoke suppressant used extensively in flexible and rigid PVC, wire and cable, rubber and composite applications.

Aluminum hydroxide decomposes endothermically to release water and suppress heat, flame and smoke during combustion, serving as a halogen-free flame-retardant filler and smoke suppressor in PVC, polymers, rubbers, coatings and composites, while also contributing as an acid-accepting auxiliary in PVC formulations. Demand is tied to tightening fire-safety and smoke-regulation standards in construction, wire and cable and transportation, and the shift toward halogen-free and low-smoke formulations. Asia-Pacific is the largest and fastest-growing region, 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 safety-critical applications. Continued fire-safety and polymer growth positions aluminum hydroxide as a steadily advancing flame-retardant and PVC auxiliary.