Antimony trioxide (CAS 1309-64-4, molecular formula Sb₂O₃) is the most important commercial compound of antimony, serving as a critical additive in flame retardant systems across plastics, textiles, rubber, coatings, and electronics. As a synergist with halogenated flame retardants, it significantly enhances fire safety performance. With the global market valued at approximately $853 million in 2024 and projected to reach $1.4 billion by 2032 at a compound annual growth rate of 6.6%, understanding the buyer landscape is essential for suppliers seeking to expand their reach in this specialized chemical segment. Industrial grade antimony trioxide accounts for approximately 78.55% of market revenue, with flame retardant applications representing the largest share at 55.11% .…