Antimony trioxide is a chemical compound with the formula Sb2O3. It is a white, odorless powder commonly used as a flame retardant in various materials, including plastics, textiles, and coatings. Its ability to inhibit combustion makes it valuable in enhancing the safety of products. In addition to its flame-retardant properties, antimony trioxide is also used in the production of glass and ceramics. It can improve the clarity and brightness of glass products. However, safety precautions are necessary when handling this compound, as it can be toxic in certain forms.