Antimony pentoxide, also known as antimony pentaoxide and antimony(V) oxide, is a chemical compound. Its chemical formula is Sb2O5. It has antimony and oxide ions in it. The antimony is in its +5 oxidation state.
Properties[change | change source]
It is a yellow solid. It is a strong oxidizing agent. It reacts with hydrochloric acid and hydrofluoric acid to make antimony pentachloride and antimony pentafluoride. It breaks down to antimony tetroxide when heated to a high temperature.
Preparation[change | change source]
It is made by reacting antimony trioxide with nitric acid. It can also be made by reacting antimony pentafluoride or antimony pentachloride with water.
Uses[change | change source]
Antimony pentoxide is used in fire retardants and the making of titanium dioxide. It is also used as a catalyst.